{"type": "FeatureCollection", "features": [{"id": "10.1016/j.jaap.2018.07.011", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:15:53Z", "type": "Journal Article", "created": "2018-07-20", "title": "Effects of pyrolysis temperature on the hydrologically relevant porosity of willow biochar", "description": "Open AccessBiochar pore space consists of porosity of multiple length scales. In direct water holding applications like water storage for plant water uptake, the main interest is in micrometre-range porosity since these pores are able to store water that is easily available for plants. Gas adsorption measurements which are commonly used to characterize the physical pore structure of biochars are not able to quantify this pore-size range. While pyrogenetic porosity (i.e. pores formed during pyrolysis process) tends to increase with elevated process temperature, it is uncertain whether this change affects the pore space capable to store plant available water. In this study, we characterized biochar porosity with x-ray tomography which provides quantitative information on the micrometer-range porosity. We imaged willow dried at 60 $^ circ$C and biochar samples pyrolysed in three different temperatures (peak temperatures 308, 384, 489 $^ circ$C, heating rate 2 $^ circ$C min$^{-1}$). Samples were carefully prepared and traced through the experiments, which allowed investigation of porosity development in micrometre size range. Pore space was quantified with image analysis of x-ray tomography images and, in addition, nanoscale porosity was examined with helium ion microscopy. The image analysis results show that initial pore structure of the raw material determines the properties of micrometre-range porosity in the studied temperature range. Thus, considering the pore-size regime relevant to the storage of plant available water, pyrolysis temperature in the studied range does not provide means to optimize the biochar structure. However, these findings do not rule out that process temperature may affect the water retention properties of biochars by modifying the chemical properties of the pore surfaces.", "keywords": ["Fysiikka", "porosity", "FOS: Physical sciences", "Applied Physics (physics.app-ph)", "kuivatislaus", "01 natural sciences", "huokoisuus", "image analysis", "biochar", "ta216", "ta218", "0105 earth and related environmental sciences", "x-ray tomography", "biohiili", "Condensed Matter - Materials Science", "ta114", "Physics", "ta1182", "Materials Science (cond-mat.mtrl-sci)", "Physics - Applied Physics", "04 agricultural and veterinary sciences", "slow pyrolysis", "6. Clean water", "kuvantaminen", "kuva-analyysi", "0401 agriculture", " forestry", " and fisheries"]}, "links": [{"href": "https://doi.org/10.1016/j.jaap.2018.07.011"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Analytical%20and%20Applied%20Pyrolysis", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.jaap.2018.07.011", "name": "item", "description": "10.1016/j.jaap.2018.07.011", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.jaap.2018.07.011"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-09-01T00:00:00Z"}}, {"id": "10.1016/j.eml.2021.101564", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:15:35Z", "type": "Journal Article", "created": "2021-12-08", "title": "Cloaking strategy for Love waves", "description": "Love waves are antiplane elastic waves which propagate along the surface of a heterogeneous medium. Under time-harmonic regime, they are governed by a scalar equation of the Helmholtz type. We exploit the invariance of this governing equation under an in-plane arbitrary coordinate transformation to design broadband cloaks for surface defects. In particular, we apply transformation elastodynamics to determine the anisotropic, position dependent, mechanical properties of ideal cloaks able to hide triangular and parabolic-shaped defects. Dispersion analysis and time-harmonic numerical simulations are employed to validate the proposed strategy. Next, we utilize layered monoclinic materials, with homogenized properties matching those of ideal cloaks, to design feasible cloaks. The performance of the layered cloaks is validated via time-harmonic numerical simulations which show a significant reduction of the defect-generated scattered fields.", "keywords": ["Love waves; Cloaking; Transformation elastodynamics; Layered media; Homogenization; Metamaterials", "0103 physical sciences", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "01 natural sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.eml.2021.101564"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Extreme%20Mechanics%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.eml.2021.101564", "name": "item", "description": "10.1016/j.eml.2021.101564", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.eml.2021.101564"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-01-01T00:00:00Z"}}, {"id": "10.1016/j.energy.2019.05.097", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:15:35Z", "type": "Journal Article", "created": "2019-05-16", "title": "Correlating photovoltaic soiling losses to waveband and single-value transmittance measurements", "description": "Open AccessThis paper presents the results of an investigation on the spectral losses of photovoltaic (PV) soiling. The transmittance of a glass coupon exposed to natural soiling outdoors in Ja\ufffd\ufffdn, southern Spain, has been measured weekly and used to estimate the soiling losses that various types of photovoltaic materials would experience if installed in the same location. The results suggest that measuring the hemispherical transmittance of the soiling accumulated on a PV glass coupon can give enough information to quantify the impact of soiling on energy production. Each PV technology is found to have a preferred spectral region, or a specific single wavelength, for which the transmittance through a PV glass coupon could be used for the best estimation of soiling losses. Overall, considering the average spectral transmittance between the extreme wavelengths of the material-specific absorption band, or the transmittance of soiling at a single wavelength between 500 and 600 nm yields the best estimations for different PV technologies. The results of this work can lead to innovative approaches to detect soiling in the field and to estimate the impact of spectral changes induced by soiling on PV energy production.", "keywords": ["13. Climate action", "0211 other engineering and technologies", "0202 electrical engineering", " electronic engineering", " information engineering", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "02 engineering and technology", "optical transmittance; photovoltaic; reliability; soiling; spectral losses", "7. Clean energy", "Physics - Optics", "Optics (physics.optics)"]}, "links": [{"href": "https://iris.uniroma1.it/bitstream/11573/1625650/3/Micheli_Correlating%20photovoltaic_Post-print_2019.pdf"}, {"href": "https://doi.org/10.1016/j.energy.2019.05.097"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Energy", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.energy.2019.05.097", "name": "item", "description": "10.1016/j.energy.2019.05.097", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.energy.2019.05.097"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-08-01T00:00:00Z"}}, {"id": "10.1016/j.ijengsci.2021.103547", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:15:53Z", "type": "Journal Article", "created": "2021-08-10", "title": "Lamb\u2019s problem for a half-space coupled to a generic distribution of oscillators at the surface", "description": "We propose an analytical framework to model the effect of single and multiple mechanical surface oscillators on the dynamics of vertically polarized elastic waves propagating in a semi-infinite medium. The formulation extends the canonical Lamb's problem, originally developed to obtain the wavefield induced by a harmonic line source in an elastic half-space, to the scenario where a finite cluster of vertical oscillators is attached to the medium surface. In short, our approach utilizes the solution of the classical Lamb's problem as Green's function to formulate the multiple scattered fields generated by the resonators. For an arbitrary number of resonators, arranged atop the elastic half-space in an arbitrary configuration, the displacement fields are obtained in closed-form and validated with numerics developed in a two-dimensional finite element environment.", "keywords": ["FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "02 engineering and technology", "0101 mathematics", "0210 nano-technology", "Elastic waves; Lamb\u2019s problem; Seismic metamaterials; Metasurfaces", "01 natural sciences"]}, "links": [{"href": "https://cris.unibo.it/bitstream/11585/830573/4/Lambs_problems_pp.pdf"}, {"href": "https://doi.org/10.1016/j.ijengsci.2021.103547"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/International%20Journal%20of%20Engineering%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.ijengsci.2021.103547", "name": "item", "description": "10.1016/j.ijengsci.2021.103547", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.ijengsci.2021.103547"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-11-01T00:00:00Z"}}, {"id": "10.1016/j.jsv.2021.116599", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:15:59Z", "type": "Journal Article", "created": "2021-11-11", "title": "Rayleigh wave propagation in nonlinear metasurfaces", "description": "We investigate the propagation of Rayleigh waves in a half-space coupled to a nonlinear metasurface. The metasurface consists of an array of nonlinear oscillators attached to the free surface of a homogeneous substrate. We describe, analytically and numerically, the effects of nonlinear interaction force and energy loss on the dispersion of Rayleigh waves. We develop closed-form expressions to predict the dispersive characteristics of nonlinear Rayleigh waves by adopting a leading-order effective medium description. In particular, we demonstrate how hardening nonlinearity reduces and eventually eliminates the linear filtering bandwidth of the metasurface. Softening nonlinearity, in contrast, induces lower and broader spectral gaps for weak to moderate strengths of nonlinearity, and narrows and eventually closes the gaps at high strengths of nonlinearity. We also observe the emergence of a spatial gap (in wavenumber) in the in-phase branch of the dispersion curves for softening nonlinearity. Finally, we investigate the interplay between nonlinearity and energy loss and discuss their combined effects on the dispersive properties of the metasurface. Our analytical results, supported by finite element simulations, demonstrate the mechanisms for achieving tunable dispersion characteristics in nonlinear metasurfaces.", "keywords": ["Nonlinear metasurfaces", "0203 mechanical engineering", "FOS: Physical sciences", "Damped waves propagation", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "02 engineering and technology", "Nonlinear dispersion", "Damped waves propagation; Elastic metamaterials; Nonlinear dispersion; Nonlinear metasurfaces; Rayleigh waves", "Rayleigh waves", "0210 nano-technology", "Elastic metamaterials"]}, "links": [{"href": "https://cris.unibo.it/bitstream/11585/844088/6/Rayleigh%20wave%20propagation%20in%20nonlinear%20metasurfaces.pdf"}, {"href": "https://authors.library.caltech.edu/110071/3/1-s2.0-S0022460X2100612X-main.pdf"}, {"href": "https://authors.library.caltech.edu/110071/1/2107.06930.pdf"}, {"href": "https://doi.org/10.1016/j.jsv.2021.116599"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Sound%20and%20Vibration", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.jsv.2021.116599", "name": "item", "description": "10.1016/j.jsv.2021.116599", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.jsv.2021.116599"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-03-01T00:00:00Z"}}, {"id": "10.1016/j.soildyn.2024.108631", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:16:18Z", "type": "Journal Article", "created": "2024-04-24", "title": "Dynamic structure-soil-structure interaction for nuclear power plants", "description": "Open AccessThe paper explores the linear and nonlinear dynamic interaction between the reactor and the auxiliary buildings of a Nuclear Power Plant on a realistic layered soil profile, aiming to evaluate the effect of the auxiliary building on the seismic response of crucial components inside the reactor building. Based on realistic geometrical assumptions, highfidelity 3D finite element (FE) models of increasing sophistication are created in the Real-ESSI Simulator. Starting with elastic soil conditions and assuming tied soil\u2500foundation interfaces, it is shown that the rocking vibration mode of the soil\u2500reactor building system is amplified by the presence of the auxiliary building through a detrimental out-of-phase rotational interaction mechanism. Adding nonlinear interfaces, which allow for soil\u2500foundation detachment during seismic shaking, introduces higher excitation frequencies (above 10 Hz) in the foundation of the reactor building, leading to amplification effects in the resonant vibration response of the biological shield wall (incl. reactor vessel) inside the reactor building. A small amount of sliding at the soil\u2500foundation interface of the auxiliary building slightly decreases its response, thus reducing its aforementioned negative effects on the reactor building. When soil nonlinearity is accounted for, the rocking vibration mode of the soil\u2500reactor building system almost vanishes, thanks to the strongly nonlinear response of the underlying soil. This leads to a beneficial out-of-phase horizontal interaction mechanism between the two buildings, reducing the spectral accelerations at critical points inside the reactor building by up to 55% for frequencies close to the resonant vibration frequency of the auxiliary building. This implies that the neighboring buildings could offer mutual seismic protection to each other, in a similar way to the recently emerged seismic resonant metamaterials, provided that they are properly tuned during the design phase, accounting for soil and soil-foundation interface nonlinearities.", "keywords": ["Structure-Soil-Structure interaction (SSSI)", "Structure-Soil-Structure interaction (SSSI); Nuclear Power Plants (NPPs); Domain reduction method (DRM); Nonlinear interface; Nonlinear soil; Seismic resonant metamaterials; Meta-SSI", "FOS: Physical sciences", "Structure-soil-structure interaction (SSSI); Nuclear power plants (NPPs); Domain reduction method (DRM); Nonlinear interface; Nonlinear soil; Seismic resonant metamaterials; Meta-SSI", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "7. Clean energy", "Domain reduction method (DRM)", "Meta-SSI", "Nuclear Power Plants (NPPs)", "Nonlinear soil", "Structure-soil-structure interaction (SSSI)", "Nuclear power plants (NPPs)", "Nonlinear interface", "Seismic resonant metamaterials"]}, "links": [{"href": "https://doi.org/10.1016/j.soildyn.2024.108631"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Dynamics%20and%20Earthquake%20Engineering", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soildyn.2024.108631", "name": "item", "description": "10.1016/j.soildyn.2024.108631", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soildyn.2024.108631"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-06-01T00:00:00Z"}}, {"id": "10.1016/j.solener.2020.10.028", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:16:18Z", "type": "Journal Article", "created": "2020-11-06", "title": "Design, characterization and indoor validation of the optical soiling detector \u201cDUSST\u201d", "description": "Nowadays, photovoltaic (PV) technology has reached a high level of maturity in terms of module efficiency and cost competitiveness in comparison with other energy technologies. As PV has achieved high levels of deployment, the development of devices that can help to reduce PV operation and maintenance costs has become a priority. Soiling can be cause of significant losses in certain PV plants and its detection has become essential to ensure a correct mitigation. For this reason, accurate and low-cost monitoring devices are needed. While soiling stations have been traditionally employed to measure the impact of soiling, their high cost and maintenance have led to the development of innovative low-cost optical sensors, such as the device presented in this work and named 'DUSST' (Detector Unit for Soiling Spectral Transmittance). The thermal characterization of the components of DUSST and the methodology used to predict soiling transmittance losses are presented in this study. The results show that the losses can be predicted with an error lower than 1.4%. The method has been verified with an experimental campaign with naturally soiled coupons exposed outdoors in Ja\ufffd\ufffdn, Spain.", "keywords": ["monitoring; reliability; sensor; soiling; thermal characterization; transmittance losses", "0211 other engineering and technologies", "0202 electrical engineering", " electronic engineering", " information engineering", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "02 engineering and technology", "7. Clean energy"]}, "links": [{"href": "https://iris.uniroma1.it/bitstream/11573/1625605/3/Fernandez-Solas_Design_Post-print_2020.pdf"}, {"href": "https://doi.org/10.1016/j.solener.2020.10.028"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Solar%20Energy", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.solener.2020.10.028", "name": "item", "description": "10.1016/j.solener.2020.10.028", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.solener.2020.10.028"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-11-01T00:00:00Z"}}, {"id": "10.1016/j.solmat.2020.110539", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:16:18Z", "type": "Journal Article", "created": "2020-04-20", "title": "Selection of optimal wavelengths for optical soiling modelling and detection in photovoltaic modules", "description": "Open AccessAccepted Manuscript (Postprint)", "keywords": ["dust; optical modelling; photovoltaic; reliability; soiling; spectral losses", "0211 other engineering and technologies", "0202 electrical engineering", " electronic engineering", " information engineering", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "02 engineering and technology", "7. Clean energy", "Physics - Optics", "Optics (physics.optics)"]}, "links": [{"href": "https://iris.uniroma1.it/bitstream/11573/1625572/2/Micheli_postprint_Selection_2020.pdf.pdf"}, {"href": "https://doi.org/10.1016/j.solmat.2020.110539"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Solar%20Energy%20Materials%20and%20Solar%20Cells", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.solmat.2020.110539", "name": "item", "description": "10.1016/j.solmat.2020.110539", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.solmat.2020.110539"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-08-01T00:00:00Z"}}, {"id": "10.1016/j.ymssp.2022.109478", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:16:28Z", "type": "Journal Article", "created": "2022-07-01", "title": "Topological edge states of quasiperiodic elastic metasurfaces", "description": "In this work, we investigate the dynamic behavior and the topological properties of quasiperiodic elastic metasurfaces, namely arrays of mechanical oscillators arranged over the free surface of an elastic half-space according to a quasiperiodic spatial distribution. An ad-hoc multiple scattering formulation is developed to describe the dynamic interaction between Rayleigh waves and a generic array of surface resonators. The approach allows to calculate the spectrum of natural frequencies of the quasiperiodic metasurface which reveals a fractal distribution of the frequency gaps reminiscent of the Hofstadter butterfly. These gaps have nontrivial topological properties and can host Rayleigh-like edge modes. We demonstrate that such topologically protected edge modes can be driven from one boundary to the opposite of the array by a smooth variation of the phason, a parameter which modulates the geometry of the array. Topological elastic waveguides designed on these principles provide new opportunities in surface acoustic wave engineering for vibration control, energy harvesting, and lossless signal transport, among others.", "keywords": ["Quasiperiodic structures; Rayleigh waves; Synthetic dimensions; Topological metamaterials; Edge modes", "0103 physical sciences", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "01 natural sciences"]}, "links": [{"href": "https://cris.unibo.it/bitstream/11585/897192/3/topological%2bedge%2bpost%2bprint%2b.pdf"}, {"href": "https://doi.org/10.1016/j.ymssp.2022.109478"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Mechanical%20Systems%20and%20Signal%20Processing", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.ymssp.2022.109478", "name": "item", "description": "10.1016/j.ymssp.2022.109478", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.ymssp.2022.109478"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-12-01T00:00:00Z"}}, {"id": "10.1038/s41598-022-04900-0", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:16:49Z", "type": "Journal Article", "created": "2022-01-20", "title": "Octet lattice-based plate for elastic wave control", "description": "Abstract<p>Motivated by the importance of lattice structures in multiple fields, we numerically investigate the propagation of flexural waves in a thin reticulated plate augmented with two classes of metastructures for wave mitigation and guiding, namely metabarriers and metalenses. The cellular architecture of this plate invokes the well-known octet topology, while the metadevices rely on novel customized octets either comprising spherical masses added to the midpoint of their struts or variable node thickness. We numerically determine the dispersion curves of a doubly-periodic array of octets, which produce a broad bandgap whose underlying physics is elucidated and leveraged as a design paradigm, allowing the construction of a metabarrier effective for inhibiting the transmission of waves. More sophisticated effects emerge upon parametric analyses of the added masses and node thickness, leading to graded designs that spatially filter waves through an enlarged bandgap via rainbow trapping. Additionally, Luneburg and Maxwell metalenses are realized using the spatial modulation of the tuning parameters and numerically tested. Wavefronts impinging on these structures are progressively curved within the inhomogeneous media and steered toward a focal point. Our results yield new perspectives for the use of octet-like lattices, paving the way for promising applications in vibration isolation and energy focusing.</p", "keywords": ["Science", "Q", "R", "Medicine", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "physics.app-ph", "Article", "510"]}, "links": [{"href": "https://www.nature.com/articles/s41598-022-04900-0.pdf"}, {"href": "https://doi.org/10.1038/s41598-022-04900-0"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Scientific%20Reports", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/s41598-022-04900-0", "name": "item", "description": "10.1038/s41598-022-04900-0", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/s41598-022-04900-0"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-01-20T00:00:00Z"}}, {"id": "10.1103/physrevapplied.13.064073", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:17:24Z", "type": "Journal Article", "created": "2020-07-01", "title": "Berreman Embedded Eigenstates for Narrow-Band Absorption and Thermal Emission", "description": "Embedded eigenstates are nonradiative modes of an open structure with momentum compatible with radiation, yet characterized by unboundedly large Q-factors. Traditionally, these states originate from total destructive interference of radiation from two or more non-orthogonal modes in periodic structures. In this work, we demonstrate a novel class of embedded eigenstates based on Berreman modes in epsilon-near-zero (ENZ) layered materials and propose realistic silicon carbide (SiC) structures supporting high-Q (~10^3) resonances based on these principles. The proposed structures demonstrate strong absorption in a narrow spectral and angular range, giving rise to quasi-coherent and highly directive thermal emission.", "keywords": ["0103 physical sciences", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "02 engineering and technology", "0210 nano-technology", "01 natural sciences", "7. Clean energy", "Physics - Optics", "Optics (physics.optics)"]}, "links": [{"href": "https://doi.org/10.1103/physrevapplied.13.064073"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Physical%20Review%20Applied", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1103/physrevapplied.13.064073", "name": "item", "description": "10.1103/physrevapplied.13.064073", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1103/physrevapplied.13.064073"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-06-30T00:00:00Z"}}, {"id": "10.1103/physrevapplied.15.024004", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:17:24Z", "type": "Journal Article", "created": "2021-02-01", "title": "Glide-Symmetric Acoustic Waveguides for Extreme Sensing and Isolation", "description": "Glide symmetry offers new degrees of freedom to engineer the properties of periodic structures, and thus it has been exploited in various electromagnetic structures. However, so far there has been little exploration on the impact that glide symmetry can offer in the field of acoustics. In this paper, we explore glide-symmetric acoustic waveguides, highlighting their dispersion characteristics and guiding properties and demonstrating opportunities in the context of acoustic devices. Here we analytically derive their dispersive features applying a semi-analytical mode matching technique. We then demonstrate how the unusual dispersion properties of glide-symmetric acoustic waveguides can be used to achieve very sharp frequency responses. Based on these results, we propose a sensing platform for liquid analytes that exhibits large sensitivity and linearity. Furthermore, by introducing fluid motion, we leverage these responses to design an acoustic isolator based on acoustic Mach-Zehnder interferometry, whose design is more favorable in terms of footprint and complexity in comparison to other acoustic nonreciprocal devices that do not rely on glide symmetry.", "keywords": ["0202 electrical engineering", " electronic engineering", " information engineering", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "02 engineering and technology"], "contacts": [{"organization": "Jankovi\u0107, Nikolina, Al\u00f9, Andrea,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1103/physrevapplied.15.024004"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Physical%20Review%20Applied", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1103/physrevapplied.15.024004", "name": "item", "description": "10.1103/physrevapplied.15.024004", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1103/physrevapplied.15.024004"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-02-01T00:00:00Z"}}, {"id": "10.1103/physrevapplied.20.044047", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:17:24Z", "type": "Journal Article", "created": "2023-10-18", "title": "Asymmetric spoof-fluid-spoof acoustic waveguide and its application as a  CO2  sensor", "description": "Open AccessWe study pressure acoustic propagation in asymmetric spoof-fluid-spoof acoustic waveguides and its potential application in acoustic gas sensors. First, a stable and efficient analytical method is established for fast calculation of the dispersion curves based on spectral expansion and enforcement of continuity between segments at suitable collocation points. The analysis is validated by a commercial finite element software. The geometric design of the waveguide is then optimized for the emergence of a nearly-flat dispersion curve associated with vertical geometric asymmetry. The waveguide is fabricated using 3D printing technology and the measurement results corroborate the numerical simulations. Based on the nearly-flat dispersion curve supported by this waveguide, a CO$_2$ sensor is proposed allowing to relate the phase difference measured between two points in the waveguide to the composition of the gas in the waveguide. The proposed sensor is experimentally validated in a controlled environment and the measurement results match the computational predictions well. The sensor is robust with respect to noise and signal-recording duration due to fast phase measurements and shows high sensitivity to gas concentration due to reliance on the second, nearly-flat, dispersion curve. In addition, the sensor is label-free and low-cost, while exhibiting rapid response, low-maintenance requirements and potential for measurements in a wide range of CO$_2$ concentrations without saturation issues.", "keywords": ["Signal Processing (eess.SP)", "FOS: Electrical engineering", " electronic engineering", " information engineering", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "Electrical Engineering and Systems Science - Signal Processing"]}, "links": [{"href": "https://doi.org/10.1103/physrevapplied.20.044047"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Physical%20Review%20Applied", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1103/physrevapplied.20.044047", "name": "item", "description": "10.1103/physrevapplied.20.044047", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1103/physrevapplied.20.044047"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-10-18T00:00:00Z"}}, {"id": "10.1098/rspa.2021.0669", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:17:21Z", "type": "Journal Article", "created": "2022-06-01", "title": "A multiple scattering formulation for finite-size flexural metasurfaces", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>We provide an analytical formulation to model the propagation of elastic waves in a homogeneous half-space supporting an array of thin plates. The technique provides the displacement field obtained from the interaction between an incident wave generated by a harmonic source and the scattered fields induced by the flexural motion of the plates. The scattered field generated by each plate is calculated using an ad-hoc set of Green\u2019s functions. The interaction between the incident field and the scattered fields is modelled through a multiple scattering formulation. Owing to the introduction of the multiple scattering formalism, the proposed technique can handle a generic set of plates arbitrarily arranged on the half-space surface. The method is validated via comparison with finite element simulations considering Rayleigh waves interacting with a single and a collection of thin plates. Our framework can be used to investigate the interaction of vertically polarized surface waves and flexural resonators in different engineering contexts, from the design of novel surface acoustic wave devices to the interpretation of urban vibration problems.</p></article>", "keywords": ["elastic metamaterials; Rayleigh waves; Lamb's problem; seismic metasurfaces; structure-soil-structure interactions", "0103 physical sciences", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "02 engineering and technology", "0210 nano-technology", "01 natural sciences"]}, "links": [{"href": "https://cris.unibo.it/bitstream/11585/897228/3/A_multiple_scattering_formulation_for_flexural_metasurfaces__PRSA_.pdf"}, {"href": "https://royalsocietypublishing.org/doi/pdf/10.1098/rspa.2021.0669"}, {"href": "https://doi.org/10.1098/rspa.2021.0669"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Proceedings%20of%20the%20Royal%20Society%20A%3A%20Mathematical%2C%20Physical%20and%20Engineering%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1098/rspa.2021.0669", "name": "item", "description": "10.1098/rspa.2021.0669", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1098/rspa.2021.0669"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-06-01T00:00:00Z"}}, {"id": "10.1103/physrevx.9.011040", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:17:24Z", "type": "Journal Article", "created": "2019-02-28", "title": "Willis Metamaterial on a Structured Beam", "description": "Open Access21 pages, 3 figures", "keywords": ["[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics]", "[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]", "[PHYS.PHYS]Physics [physics]/Physics [physics]", "Physics", "QC1-999", "FOS: Physical sciences", "Acoustics", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "530", "01 natural sciences", "Metamaterials", "0103 physical sciences", "[PHYS.PHYS] Physics [physics]/Physics [physics]"]}, "links": [{"href": "https://doi.org/10.1103/physrevx.9.011040"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Physical%20Review%20X", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1103/physrevx.9.011040", "name": "item", "description": "10.1103/physrevx.9.011040", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1103/physrevx.9.011040"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-02-28T00:00:00Z"}}, {"id": "10.1109/jsen.2024.3368560", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:17:26Z", "type": "Journal Article", "created": "2024-02-28", "title": "Multiparameter Water Quality Monitoring System for Continuous Monitoring of Fresh Waters", "description": "Due to the global water crisis there is a strong need for real-time water quality monitoring with high temporal and spatial resolution. This paper presents an economical multiparameter water quality monitoring system for continuous monitoring of fresh waters. It is based on a sensor node that integrates turbidity, temperature, and conductivity sensors, a miniature eighteen-channel spectrophotometer, and a sensor for the detection of thermotolerant coliforms, which is a major novelty of the system. Due to the influence of water impurities on the measurement of thermotolerant coliforms, a heuristic method has been developed to mitigate this effect. Moreover, the sensor is low power and with an integrated Long Range Wide Area Network module, it comprises a system that is wireless sensor network ready and can send data to a dedicated server. In addition, the system is submersible, capable of long-term field operation, and significantly cheaper in comparison to existing solutions. The purpose of the system is to give early warning of incidental pollution situations, thus enabling authorities to take action regarding further prevention of such occasions.", "keywords": ["13. Climate action", "0208 environmental biotechnology", "0207 environmental engineering", "FOS: Physical sciences", "14. Life underwater", "Physics - Applied Physics", "02 engineering and technology", "Applied Physics (physics.app-ph)", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1109/jsen.2024.3368560"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/IEEE%20Sensors%20Journal", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1109/jsen.2024.3368560", "name": "item", "description": "10.1109/jsen.2024.3368560", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1109/jsen.2024.3368560"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-04-01T00:00:00Z"}}, {"id": "10.1364/cleo_qels.2019.ff3b.6", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:18:14Z", "type": "Journal Article", "created": "2019-05-07", "title": "Disorder-Immune Photonics Based on Mie-Resonant Dielectric Metamaterials", "description": "Open Access6 pages, 5 figures", "keywords": ["Optics and Photonics", "Photons", "F300", "H600", "FOS: Physical sciences", "535", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "Disordered Systems and Neural Networks (cond-mat.dis-nn)", "02 engineering and technology", "Condensed Matter - Disordered Systems and Neural Networks", "Models", " Theoretical", "0210 nano-technology", "Physics - Optics", "Optics (physics.optics)"]}, "links": [{"href": "https://nrl.northumbria.ac.uk/id/eprint/47159/1/LE17739_2_.pdf"}, {"href": "https://openresearch-repository.anu.edu.au/bitstream/1885/214130/3/01_Liu_Disorder-Immune_Photonics_2019.pdf.jpg"}, {"href": "https://doi.org/10.1364/cleo_qels.2019.ff3b.6"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Conference%20on%20Lasers%20and%20Electro-Optics", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1364/cleo_qels.2019.ff3b.6", "name": "item", "description": "10.1364/cleo_qels.2019.ff3b.6", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1364/cleo_qels.2019.ff3b.6"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-01-01T00:00:00Z"}}, {"id": "10.1364/prj.424247", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:18:14Z", "type": "Journal Article", "created": "2021-04-28", "title": "Topological scattering singularities and embedded eigenstates for polarization control and sensing applications", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Epsilon-near-zero and epsilon near-pole materials enable reflective systems supporting a class of symmetry-protected and accidental embedded eigenstates (EEs) characterized by a diverging phase resonance. Here we show that pairs of topologically protected scattering singularities necessarily emerge from EEs when a non-Hermitian parameter is introduced, lifting the degeneracy between oppositely charged singularities. The underlying topological charges are characterized by an integer winding number and appear as phase vortices of the complex reflection coefficient. By creating and annihilating them, we show that these singularities obey charge conservation, and provide versatile control of amplitude, phase, and polarization in reflection, with potential applications for polarization control and sensing.</p></article>", "keywords": ["0103 physical sciences", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "01 natural sciences", "Physics - Optics", "Optics (physics.optics)"]}, "links": [{"href": "https://doi.org/10.1364/prj.424247"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Photonics%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1364/prj.424247", "name": "item", "description": "10.1364/prj.424247", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1364/prj.424247"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-06-28T00:00:00Z"}}, {"id": "10.2139/ssrn.4373229", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:19:02Z", "type": "Journal Article", "created": "2023-02-28", "title": "A Multiple Scattering Formulation for Elastic Wave Propagation in Space-Time Modulated Metamaterials", "description": "Space-time modulation of material parameters offers new possibilities for manipulating elastic wave propagation by exploiting time-reversal symmetry breaking. Here we propose and validate a general framework based on the multiple scattering theory to model space-time modulated elastic metamaterials, namely elastic waveguides equipped with modulated resonators. The formulation allows to consider an arbitrary distribution of resonators with a generic space-time modulation profile and compute the wavefield within and outside the resonators' region. Additionally, under appropriate assumptions, the same framework can be exploited to predict the waveguide dispersion relation. We demonstrate the capabilities of our formulation by revisiting the dynamics of two representative space-time modulated systems, e.g. the non-reciprocal propagation of (i) flexural waves along a metabeam and (ii) surface acoustic waves along a metasurface. Given its flexibility, the proposed method can pave the way towards the design of novel devices able to realize unidirectional transport of elastic energy for vibration isolation, signal processing and energy harvesting purposes.", "keywords": ["0103 physical sciences", "Classical Physics (physics.class-ph)", "FOS: Physical sciences", "Physics - Applied Physics", "Physics - Classical Physics", "Applied Physics (physics.app-ph)", "02 engineering and technology", "INSPIRE", "0210 nano-technology", "01 natural sciences"]}, "links": [{"href": "https://cris.unibo.it/bitstream/11585/954744/1/1-s2.0-S0022460X2300648X-main.pdf"}, {"href": "https://doi.org/10.2139/ssrn.4373229"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Sound%20and%20Vibration", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2139/ssrn.4373229", "name": "item", "description": "10.2139/ssrn.4373229", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2139/ssrn.4373229"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-01-01T00:00:00Z"}}, {"id": "2815712844", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:22:54Z", "type": "Journal Article", "created": "2019-02-28", "title": "Willis Metamaterial on a Structured Beam", "description": "Open Access21 pages, 3 figures", "keywords": ["[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics]", "[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]", "[PHYS.PHYS]Physics [physics]/Physics [physics]", "Physics", "QC1-999", "FOS: Physical sciences", "Acoustics", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "530", "01 natural sciences", "Metamaterials", "0103 physical sciences", "[PHYS.PHYS] Physics [physics]/Physics [physics]"]}, "links": [{"href": "https://doi.org/2815712844"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Physical%20Review%20X", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2815712844", "name": "item", "description": "2815712844", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2815712844"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-02-28T00:00:00Z"}}, {"id": "20.500.11850/670813", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:22:37Z", "type": "Journal Article", "created": "2024-04-24", "title": "Dynamic structure-soil-structure interaction for nuclear power plants", "description": "Open AccessThe paper explores the linear and nonlinear dynamic interaction between the reactor and the auxiliary buildings of a Nuclear Power Plant on a realistic layered soil profile, aiming to evaluate the effect of the auxiliary building on the seismic response of crucial components inside the reactor building. Based on realistic geometrical assumptions, highfidelity 3D finite element (FE) models of increasing sophistication are created in the Real-ESSI Simulator. Starting with elastic soil conditions and assuming tied soil\u2500foundation interfaces, it is shown that the rocking vibration mode of the soil\u2500reactor building system is amplified by the presence of the auxiliary building through a detrimental out-of-phase rotational interaction mechanism. Adding nonlinear interfaces, which allow for soil\u2500foundation detachment during seismic shaking, introduces higher excitation frequencies (above 10 Hz) in the foundation of the reactor building, leading to amplification effects in the resonant vibration response of the biological shield wall (incl. reactor vessel) inside the reactor building. A small amount of sliding at the soil\u2500foundation interface of the auxiliary building slightly decreases its response, thus reducing its aforementioned negative effects on the reactor building. When soil nonlinearity is accounted for, the rocking vibration mode of the soil\u2500reactor building system almost vanishes, thanks to the strongly nonlinear response of the underlying soil. This leads to a beneficial out-of-phase horizontal interaction mechanism between the two buildings, reducing the spectral accelerations at critical points inside the reactor building by up to 55% for frequencies close to the resonant vibration frequency of the auxiliary building. This implies that the neighboring buildings could offer mutual seismic protection to each other, in a similar way to the recently emerged seismic resonant metamaterials, provided that they are properly tuned during the design phase, accounting for soil and soil-foundation interface nonlinearities.", "keywords": ["Structure-Soil-Structure interaction (SSSI)", "Structure-Soil-Structure interaction (SSSI); Nuclear Power Plants (NPPs); Domain reduction method (DRM); Nonlinear interface; Nonlinear soil; Seismic resonant metamaterials; Meta-SSI", "FOS: Physical sciences", "Structure-soil-structure interaction (SSSI); Nuclear power plants (NPPs); Domain reduction method (DRM); Nonlinear interface; Nonlinear soil; Seismic resonant metamaterials; Meta-SSI", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "7. Clean energy", "Domain reduction method (DRM)", "Meta-SSI", "Nuclear Power Plants (NPPs)", "Nonlinear soil", "Structure-soil-structure interaction (SSSI)", "Nuclear power plants (NPPs)", "Nonlinear interface", "Seismic resonant metamaterials"]}, "links": [{"href": "https://doi.org/20.500.11850/670813"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Dynamics%20and%20Earthquake%20Engineering", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "20.500.11850/670813", "name": "item", "description": "20.500.11850/670813", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/20.500.11850/670813"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-06-01T00:00:00Z"}}, {"id": "11585/954744", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:22:20Z", "type": "Journal Article", "created": "2023-02-28", "title": "A Multiple Scattering Formulation for Elastic Wave Propagation in Space-Time Modulated Metamaterials", "description": "Space-time modulation of material parameters offers new possibilities for manipulating elastic wave propagation by exploiting time-reversal symmetry breaking. Here we propose and validate a general framework based on the multiple scattering theory to model space-time modulated elastic metamaterials, namely elastic waveguides equipped with modulated resonators. The formulation allows to consider an arbitrary distribution of resonators with a generic space-time modulation profile and compute the wavefield within and outside the resonators' region. Additionally, under appropriate assumptions, the same framework can be exploited to predict the waveguide dispersion relation. We demonstrate the capabilities of our formulation by revisiting the dynamics of two representative space-time modulated systems, e.g. the non-reciprocal propagation of (i) flexural waves along a metabeam and (ii) surface acoustic waves along a metasurface. Given its flexibility, the proposed method can pave the way towards the design of novel devices able to realize unidirectional transport of elastic energy for vibration isolation, signal processing and energy harvesting purposes.", "keywords": ["0103 physical sciences", "Classical Physics (physics.class-ph)", "FOS: Physical sciences", "Physics - Applied Physics", "Physics - Classical Physics", "Applied Physics (physics.app-ph)", "02 engineering and technology", "INSPIRE", "0210 nano-technology", "01 natural sciences"]}, "links": [{"href": "https://cris.unibo.it/bitstream/11585/954744/1/1-s2.0-S0022460X2300648X-main.pdf"}, {"href": "https://doi.org/11585/954744"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Sound%20and%20Vibration", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "11585/954744", "name": "item", "description": "11585/954744", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/11585/954744"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-01-01T00:00:00Z"}}, {"id": "10044/1/94241", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:21:59Z", "type": "Journal Article", "created": "2022-01-20", "title": "Octet lattice-based plate for elastic wave control", "description": "Abstract<p>Motivated by the importance of lattice structures in multiple fields, we numerically investigate the propagation of flexural waves in a thin reticulated plate augmented with two classes of metastructures for wave mitigation and guiding, namely metabarriers and metalenses. The cellular architecture of this plate invokes the well-known octet topology, while the metadevices rely on novel customized octets either comprising spherical masses added to the midpoint of their struts or variable node thickness. We numerically determine the dispersion curves of a doubly-periodic array of octets, which produce a broad bandgap whose underlying physics is elucidated and leveraged as a design paradigm, allowing the construction of a metabarrier effective for inhibiting the transmission of waves. More sophisticated effects emerge upon parametric analyses of the added masses and node thickness, leading to graded designs that spatially filter waves through an enlarged bandgap via rainbow trapping. Additionally, Luneburg and Maxwell metalenses are realized using the spatial modulation of the tuning parameters and numerically tested. Wavefronts impinging on these structures are progressively curved within the inhomogeneous media and steered toward a focal point. Our results yield new perspectives for the use of octet-like lattices, paving the way for promising applications in vibration isolation and energy focusing.</p", "keywords": ["Science", "Q", "R", "Medicine", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "physics.app-ph", "Article", "510"]}, "links": [{"href": "https://www.nature.com/articles/s41598-022-04900-0.pdf"}, {"href": "https://doi.org/10044/1/94241"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Scientific%20Reports", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10044/1/94241", "name": "item", "description": "10044/1/94241", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10044/1/94241"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-01-20T00:00:00Z"}}, {"id": "11572/372116", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:22:19Z", "type": "Journal Article", "created": "2022-07-18", "title": "Tensile material instabilities in elastic beam lattices lead to a bounded stability domain", "description": "<p>             Homogenization of the incremental response of grids made up of             preloaded             elastic rods leads to homogeneous effective continua which may suffer macroscopic instability, occurring at the same time in both the grid and the effective continuum. This instability corresponds to the loss of ellipticity in the effective material and the formation of localized responses as, for instance, shear bands. Using lattice models of elastic rods, loss of ellipticity has always been found to occur for stress states involving compression of the rods, as             usually             these structural elements buckle\uffc2\uffa0only under compression. In this way, the locus of material stability for the effective solid is unbounded in tension, i.e. the material is always stable for a tensile prestress. A rigorous application of homogenization theory is proposed to show that the inclusion of sliders (constraints imposing axial and rotational continuity, but allowing shear jumps) in the grid of rods leads to loss of ellipticity in tension so that the locus for material instability becomes             bounded             . This result explains (i) how to design elastic materials subject to localization of deformation and shear banding for all radial stress paths;\uffc2\uffa0and (ii) how for all these paths a material may fail by developing strain localization and without involving cracking.           </p>           <p>This article is part of the theme issue \uffe2\uff80\uff98Wave generation and transmission in multi-scale complex media and structured metamaterials (part 1)\uffe2\uff80\uff99.</p", "keywords": ["homogenization; material instability; sliding interface; tensile buckling", "Classical Physics (physics.class-ph)", "FOS: Physical sciences", "Physics - Applied Physics", "Physics - Classical Physics", "Applied Physics (physics.app-ph)", "02 engineering and technology", "0101 mathematics", "0210 nano-technology", "01 natural sciences"]}, "links": [{"href": "https://iris.unitn.it/bitstream/11572/372116/1/rsta.2021.0388.pdf"}, {"href": "https://iris.unitn.it/bitstream/11572/372116/2/2201.00507.pdf"}, {"href": "https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2021.0388"}, {"href": "https://doi.org/11572/372116"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Philosophical%20Transactions%20of%20the%20Royal%20Society%20A%3A%20Mathematical%2C%20Physical%20and%20Engineering%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "11572/372116", "name": "item", "description": "11572/372116", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/11572/372116"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-07-18T00:00:00Z"}}, {"id": "11585/830573", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:22:20Z", "type": "Journal Article", "created": "2021-08-10", "title": "Lamb\u2019s problem for a half-space coupled to a generic distribution of oscillators at the surface", "description": "We propose an analytical framework to model the effect of single and multiple mechanical surface oscillators on the dynamics of vertically polarized elastic waves propagating in a semi-infinite medium. The formulation extends the canonical Lamb's problem, originally developed to obtain the wavefield induced by a harmonic line source in an elastic half-space, to the scenario where a finite cluster of vertical oscillators is attached to the medium surface. In short, our approach utilizes the solution of the classical Lamb's problem as Green's function to formulate the multiple scattered fields generated by the resonators. For an arbitrary number of resonators, arranged atop the elastic half-space in an arbitrary configuration, the displacement fields are obtained in closed-form and validated with numerics developed in a two-dimensional finite element environment.", "keywords": ["seismic metamaterials", "Lamb's problem", "elastic waves", "Surface waves in solid mechanics", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "02 engineering and technology", "0101 mathematics", "0210 nano-technology", "Elastic waves; Lamb\u2019s problem; Seismic metamaterials; Metasurfaces", "metasurfaces", "01 natural sciences"]}, "links": [{"href": "https://cris.unibo.it/bitstream/11585/830573/4/Lambs_problems_pp.pdf"}, {"href": "https://doi.org/11585/830573"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/International%20Journal%20of%20Engineering%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "11585/830573", "name": "item", "description": "11585/830573", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/11585/830573"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-11-01T00:00:00Z"}}, {"id": "11585/844086", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:22:20Z", "type": "Journal Article", "created": "2021-12-08", "title": "Cloaking strategy for Love waves", "description": "Love waves are antiplane elastic waves which propagate along the surface of a heterogeneous medium. Under time-harmonic regime, they are governed by a scalar equation of the Helmholtz type. We exploit the invariance of this governing equation under an in-plane arbitrary coordinate transformation to design broadband cloaks for surface defects. In particular, we apply transformation elastodynamics to determine the anisotropic, position dependent, mechanical properties of ideal cloaks able to hide triangular and parabolic-shaped defects. Dispersion analysis and time-harmonic numerical simulations are employed to validate the proposed strategy. Next, we utilize layered monoclinic materials, with homogenized properties matching those of ideal cloaks, to design feasible cloaks. The performance of the layered cloaks is validated via time-harmonic numerical simulations which show a significant reduction of the defect-generated scattered fields.", "keywords": ["Love waves; Cloaking; Transformation elastodynamics; Layered media; Homogenization; Metamaterials", "0103 physical sciences", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "01 natural sciences"]}, "links": [{"href": "https://doi.org/11585/844086"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Extreme%20Mechanics%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "11585/844086", "name": "item", "description": "11585/844086", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/11585/844086"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-01-01T00:00:00Z"}}, {"id": "11585/897192", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:22:20Z", "type": "Journal Article", "created": "2022-07-01", "title": "Topological edge states of quasiperiodic elastic metasurfaces", "description": "In this work, we investigate the dynamic behavior and the topological properties of quasiperiodic elastic metasurfaces, namely arrays of mechanical oscillators arranged over the free surface of an elastic half-space according to a quasiperiodic spatial distribution. An ad-hoc multiple scattering formulation is developed to describe the dynamic interaction between Rayleigh waves and a generic array of surface resonators. The approach allows to calculate the spectrum of natural frequencies of the quasiperiodic metasurface which reveals a fractal distribution of the frequency gaps reminiscent of the Hofstadter butterfly. These gaps have nontrivial topological properties and can host Rayleigh-like edge modes. We demonstrate that such topologically protected edge modes can be driven from one boundary to the opposite of the array by a smooth variation of the phason, a parameter which modulates the geometry of the array. Topological elastic waveguides designed on these principles provide new opportunities in surface acoustic wave engineering for vibration control, energy harvesting, and lossless signal transport, among others.", "keywords": ["Quasiperiodic structures; Rayleigh waves; Synthetic dimensions; Topological metamaterials; Edge modes", "0103 physical sciences", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "01 natural sciences"]}, "links": [{"href": "https://cris.unibo.it/bitstream/11585/897192/3/topological%2bedge%2bpost%2bprint%2b.pdf"}, {"href": "https://doi.org/11585/897192"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Mechanical%20Systems%20and%20Signal%20Processing", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "11585/897192", "name": "item", "description": "11585/897192", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/11585/897192"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-12-01T00:00:00Z"}}, {"id": "11585/897228", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:22:20Z", "type": "Journal Article", "created": "2022-06-01", "title": "A multiple scattering formulation for finite-size flexural metasurfaces", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>We provide an analytical formulation to model the propagation of elastic waves in a homogeneous half-space supporting an array of thin plates. The technique provides the displacement field obtained from the interaction between an incident wave generated by a harmonic source and the scattered fields induced by the flexural motion of the plates. The scattered field generated by each plate is calculated using an ad-hoc set of Green\u2019s functions. The interaction between the incident field and the scattered fields is modelled through a multiple scattering formulation. Owing to the introduction of the multiple scattering formalism, the proposed technique can handle a generic set of plates arbitrarily arranged on the half-space surface. The method is validated via comparison with finite element simulations considering Rayleigh waves interacting with a single and a collection of thin plates. Our framework can be used to investigate the interaction of vertically polarized surface waves and flexural resonators in different engineering contexts, from the design of novel surface acoustic wave devices to the interpretation of urban vibration problems.</p></article>", "keywords": ["elastic metamaterials; Rayleigh waves; Lamb's problem; seismic metasurfaces; structure-soil-structure interactions", "0103 physical sciences", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "02 engineering and technology", "0210 nano-technology", "01 natural sciences"]}, "links": [{"href": "https://cris.unibo.it/bitstream/11585/897228/3/A_multiple_scattering_formulation_for_flexural_metasurfaces__PRSA_.pdf"}, {"href": "https://royalsocietypublishing.org/doi/pdf/10.1098/rspa.2021.0669"}, {"href": "https://doi.org/11585/897228"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Proceedings%20of%20the%20Royal%20Society%20A%3A%20Mathematical%2C%20Physical%20and%20Engineering%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "11585/897228", "name": "item", "description": "11585/897228", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/11585/897228"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-06-01T00:00:00Z"}}, {"id": "1807.02285", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:22:25Z", "type": "Journal Article", "created": "2019-02-28", "title": "Willis Metamaterial on a Structured Beam", "description": "Open Access21 pages, 3 figures", "keywords": ["[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics]", "[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]", "[PHYS.PHYS]Physics [physics]/Physics [physics]", "Physics", "QC1-999", "FOS: Physical sciences", "Acoustics", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "530", "01 natural sciences", "Metamaterials", "0103 physical sciences", "[PHYS.PHYS] Physics [physics]/Physics [physics]"]}, "links": [{"href": "https://doi.org/1807.02285"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Physical%20Review%20X", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "1807.02285", "name": "item", "description": "1807.02285", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/1807.02285"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-02-28T00:00:00Z"}}, {"id": "1885/214130", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:22:28Z", "type": "Journal Article", "created": "2019-05-07", "title": "Disorder-Immune Photonics Based on Mie-Resonant Dielectric Metamaterials", "description": "Open Access6 pages, 5 figures", "keywords": ["Optics and Photonics", "Photons", "F300", "H600", "FOS: Physical sciences", "535", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "Disordered Systems and Neural Networks (cond-mat.dis-nn)", "02 engineering and technology", "Condensed Matter - Disordered Systems and Neural Networks", "Models", " Theoretical", "0210 nano-technology", "Physics - Optics", "Optics (physics.optics)"]}, "links": [{"href": "https://nrl.northumbria.ac.uk/id/eprint/47159/1/LE17739_2_.pdf"}, {"href": "https://openresearch-repository.anu.edu.au/bitstream/1885/214130/3/01_Liu_Disorder-Immune_Photonics_2019.pdf.jpg"}, {"href": "https://doi.org/1885/214130"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Conference%20on%20Lasers%20and%20Electro-Optics", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "1885/214130", "name": "item", "description": "1885/214130", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/1885/214130"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-01-01T00:00:00Z"}}, {"id": "2011.03218", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:22:40Z", "type": "Journal Article", "created": "2021-02-01", "title": "Glide-Symmetric Acoustic Waveguides for Extreme Sensing and Isolation", "description": "Glide symmetry offers new degrees of freedom to engineer the properties of periodic structures, and thus it has been exploited in various electromagnetic structures. However, so far there has been little exploration on the impact that glide symmetry can offer in the field of acoustics. In this paper, we explore glide-symmetric acoustic waveguides, highlighting their dispersion characteristics and guiding properties and demonstrating opportunities in the context of acoustic devices. Here we analytically derive their dispersive features applying a semi-analytical mode matching technique. We then demonstrate how the unusual dispersion properties of glide-symmetric acoustic waveguides can be used to achieve very sharp frequency responses. Based on these results, we propose a sensing platform for liquid analytes that exhibits large sensitivity and linearity. Furthermore, by introducing fluid motion, we leverage these responses to design an acoustic isolator based on acoustic Mach-Zehnder interferometry, whose design is more favorable in terms of footprint and complexity in comparison to other acoustic nonreciprocal devices that do not rely on glide symmetry.", "keywords": ["0202 electrical engineering", " electronic engineering", " information engineering", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "02 engineering and technology"]}, "links": [{"href": "https://doi.org/2011.03218"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Physical%20Review%20Applied", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2011.03218", "name": "item", "description": "2011.03218", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2011.03218"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-02-01T00:00:00Z"}}, {"id": "2003.07897", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:22:40Z", "type": "Journal Article", "created": "2020-07-01", "title": "Berreman Embedded Eigenstates for Narrow-Band Absorption and Thermal Emission", "description": "Embedded eigenstates are nonradiative modes of an open structure with momentum compatible with radiation, yet characterized by unboundedly large Q-factors. Traditionally, these states originate from total destructive interference of radiation from two or more non-orthogonal modes in periodic structures. In this work, we demonstrate a novel class of embedded eigenstates based on Berreman modes in epsilon-near-zero (ENZ) layered materials and propose realistic silicon carbide (SiC) structures supporting high-Q (~10^3) resonances based on these principles. The proposed structures demonstrate strong absorption in a narrow spectral and angular range, giving rise to quasi-coherent and highly directive thermal emission.", "keywords": ["0103 physical sciences", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "02 engineering and technology", "0210 nano-technology", "7. Clean energy", "01 natural sciences", "Physics - Optics", "Optics (physics.optics)"]}, "links": [{"href": "https://doi.org/2003.07897"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Physical%20Review%20Applied", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2003.07897", "name": "item", "description": "2003.07897", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2003.07897"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-06-30T00:00:00Z"}}, {"id": "2102.06958", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:22:43Z", "type": "Journal Article", "created": "2021-04-28", "title": "Topological scattering singularities and embedded eigenstates for polarization control and sensing applications", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Epsilon-near-zero and epsilon near-pole materials enable reflective systems supporting a class of symmetry-protected and accidental embedded eigenstates (EEs) characterized by a diverging phase resonance. Here we show that pairs of topologically protected scattering singularities necessarily emerge from EEs when a non-Hermitian parameter is introduced, lifting the degeneracy between oppositely charged singularities. The underlying topological charges are characterized by an integer winding number and appear as phase vortices of the complex reflection coefficient. By creating and annihilating them, we show that these singularities obey charge conservation, and provide versatile control of amplitude, phase, and polarization in reflection, with potential applications for polarization control and sensing.</p></article>", "keywords": ["0103 physical sciences", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "01 natural sciences", "Physics - Optics", "Optics (physics.optics)"]}, "links": [{"href": "https://doi.org/2102.06958"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Photonics%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2102.06958", "name": "item", "description": "2102.06958", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2102.06958"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-06-28T00:00:00Z"}}, {"id": "2203.15196", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:22:46Z", "type": "Report", "title": "Unveiling Topological Charges and Their Manipulation in Electronic Circuits", "description": "Leveraging topological properties in the response of electromagnetic systems can greatly enhance their potential. Although the investigation of singularity-based electromagnetics and non-Hermitian electronics has considerably increased in recent years in the context of various scattering anomalies, their topological properties have not been fully assessed. In this work, we theoretically and experimentally demonstrate that non-Hermitian perturbations around bound states in the continuum can lead to singularities of the scattering matrix, which are topologically nontrivial and comply with charge conservation. The associated scattering matrix poles, zeros and pole-zero pairs delineate extreme scattering events, including lasing, coherent perfect absorption, and absorber-lasers. The presented framework enables a recipe for generation, annihilation and addition of these singularities in electric circuits, with potential for extreme scattering engineering across a broad range of the electromagnetic spectrum for sensing, wireless power transfer, lasing and thermal emission devices.", "keywords": ["0103 physical sciences", "Physics - Applied Physics", "7. Clean energy", "01 natural sciences", "Physics - Optics"], "contacts": [{"organization": "Sakotic, Zarko, Stankovic, Predrag, Bengin, Vesna, Krasnok, Alex, Al\u00fa, Andrea, Jankovic, Nikolina,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/2203.15196"}, {"rel": "self", "type": "application/geo+json", "title": "2203.15196", "name": "item", "description": "2203.15196", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2203.15196"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-03-28T00:00:00Z"}}, {"id": "2305.00815", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:22:47Z", "type": "Journal Article", "created": "2023-10-18", "title": "Asymmetric spoof-fluid-spoof acoustic waveguide and its application as a  CO2  sensor", "description": "Open AccessWe study pressure acoustic propagation in asymmetric spoof-fluid-spoof acoustic waveguides and its potential application in acoustic gas sensors. First, a stable and efficient analytical method is established for fast calculation of the dispersion curves based on spectral expansion and enforcement of continuity between segments at suitable collocation points. The analysis is validated by a commercial finite element software. The geometric design of the waveguide is then optimized for the emergence of a nearly-flat dispersion curve associated with vertical geometric asymmetry. The waveguide is fabricated using 3D printing technology and the measurement results corroborate the numerical simulations. Based on the nearly-flat dispersion curve supported by this waveguide, a CO$_2$ sensor is proposed allowing to relate the phase difference measured between two points in the waveguide to the composition of the gas in the waveguide. The proposed sensor is experimentally validated in a controlled environment and the measurement results match the computational predictions well. The sensor is robust with respect to noise and signal-recording duration due to fast phase measurements and shows high sensitivity to gas concentration due to reliance on the second, nearly-flat, dispersion curve. In addition, the sensor is label-free and low-cost, while exhibiting rapid response, low-maintenance requirements and potential for measurements in a wide range of CO$_2$ concentrations without saturation issues.", "keywords": ["Signal Processing (eess.SP)", "FOS: Electrical engineering", " electronic engineering", " information engineering", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "Electrical Engineering and Systems Science - Signal Processing"]}, "links": [{"href": "https://doi.org/2305.00815"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Physical%20Review%20Applied", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2305.00815", "name": "item", "description": "2305.00815", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2305.00815"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-10-18T00:00:00Z"}}, {"id": "2307.1163", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:22:47Z", "type": "Journal Article", "created": "2024-02-28", "title": "Multiparameter Water Quality Monitoring System for Continuous Monitoring of Fresh Waters", "description": "Due to the global water crisis there is a strong need for real-time water quality monitoring with high temporal and spatial resolution. This paper presents an economical multiparameter water quality monitoring system for continuous monitoring of fresh waters. It is based on a sensor node that integrates turbidity, temperature, and conductivity sensors, a miniature eighteen-channel spectrophotometer, and a sensor for the detection of thermotolerant coliforms, which is a major novelty of the system. Due to the influence of water impurities on the measurement of thermotolerant coliforms, a heuristic method has been developed to mitigate this effect. Moreover, the sensor is low power and with an integrated Long Range Wide Area Network module, it comprises a system that is wireless sensor network ready and can send data to a dedicated server. In addition, the system is submersible, capable of long-term field operation, and significantly cheaper in comparison to existing solutions. The purpose of the system is to give early warning of incidental pollution situations, thus enabling authorities to take action regarding further prevention of such occasions.", "keywords": ["13. Climate action", "0208 environmental biotechnology", "0207 environmental engineering", "FOS: Physical sciences", "14. Life underwater", "Physics - Applied Physics", "02 engineering and technology", "Applied Physics (physics.app-ph)", "6. Clean water"]}, "links": [{"href": "http://xplorestaging.ieee.org/ielx7/7361/10487994/10453458.pdf?arnumber=10453458"}, {"href": "https://doi.org/2307.1163"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/IEEE%20Sensors%20Journal", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2307.1163", "name": "item", "description": "2307.1163", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2307.1163"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-04-01T00:00:00Z"}}, {"id": "2307.16692", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:22:47Z", "type": "Journal Article", "created": "2023-11-10", "title": "Femtomolar detection of the heart failure biomarker NT-proBNP in artificial saliva using an immersible liquid-gated aptasensor with reduced graphene oxide", "description": "Measuring NT-proBNP biomarker is recommended for preliminary diagnostics of the heart failure. Recent studies suggest a possibility of early screening of biomarkers in saliva for non-invasive identification of cardiac diseases at the point-of-care. However, NT-proBNP concentrations in saliva can be thousand time lower than in blood plasma, going down to pg/mL level. To reach this level, we developed a label-free aptasensor based on a liquid-gated field effect transistor using a film of reduced graphene oxide monolayer (rGO-FET) with immobilized NT-proBNP specific aptamer. We found that, depending on ionic strength of tested solutions, there were different levels of correlation in responses of electrical parameters of the rGO-FET aptasensor, namely, the Dirac point shift and transconductance change. The correlation in response to NT-proBNP was high for 1.6 mM phosphate-buffered saline (PBS) and zero for 16 mM PBS in a wide range of analyte concentrations, varied from 1 fg/mL to 10 ng/mL. The effects of transconductance and Dirac point shift in PBS solutions of different concentrations are discussed. The biosensor exhibited a high sensitivity for both transconductance (2 uS/decade) and Dirac point shift (2.3 mV/decade) in diluted PBS with the linear range from 10 fg/mL to 1 pg/mL. The aptasensor performance has been also demonstrated in undiluted artificial saliva with the achieved limit of detection down to 41 fg/mL (~4.6 fM).", "keywords": ["Condensed Matter - Materials Science", "Physics - Instrumentation and Detectors", "Condensed Matter - Mesoscale and Nanoscale Physics", "Materials Science (cond-mat.mtrl-sci)", "FOS: Physical sciences", "Biomolecules (q-bio.BM)", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "Instrumentation and Detectors (physics.ins-det)", "02 engineering and technology", "01 natural sciences", "0104 chemical sciences", "Quantitative Biology - Biomolecules", "FOS: Biological sciences", "Mesoscale and Nanoscale Physics (cond-mat.mes-hall)", "0210 nano-technology"]}, "links": [{"href": "https://doi.org/2307.16692"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Microchemical%20Journal", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2307.16692", "name": "item", "description": "2307.16692", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2307.16692"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-01-01T00:00:00Z"}}, {"id": "2311.04674", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:22:47Z", "type": "Journal Article", "created": "2024-04-09", "title": "Direct electrochemical reduction of graphene oxide thin film for aptamer-based selective and highly sensitive detection of matrix metalloproteinase 2", "description": "Simple and low-cost biosensing solutions are suitable for point-of-care applications aiming to overcome the gap between scientific concepts and technological production. To compete with sensitivity and selectivity of golden standards, such as liquid chromatography, the functionalization of biosensors is continuously optimized to enhance the signal and improve their performance, often leading to complex chemical assay development. In this research, the efforts are made on optimizing the methodology for electrochemical reduction of graphene oxide to produce thin film-modified gold electrodes. Under the employed specific conditions, 20 cycles of cyclic voltammetry (CV) are shown to be optimal for superior electrical activation of graphene oxide into electrochemically reduced graphene oxide (ERGO). This platform is further used to develop a matrix metalloproteinase 2 (MMP-2) biosensor, where specific anti-MMP2 aptamers are utilized as a biorecognition element. MMP-2 is a protein which is typically overexpressed in tumor tissues, with important roles in tumor invasion, metastasis as well as in tumor angiogenesis. Based on impedimetric measurements, we were able to detect as low as 3.32 pg/mL of MMP-2 in PBS with a dynamic range of 10 pg/mL - 10 ng/mL. Besides high specificity, ERGO-based aptasensor showed a potential of reuse due to demonstrated successful signal restoration after experimental detection of MMP-2.", "keywords": ["Physics - Instrumentation and Detectors", "FOS: Physical sciences", "Biomolecules (q-bio.BM)", "Physics - Applied Physics", "Electrochemical Techniques", "Biosensing Techniques", "02 engineering and technology", "Applied Physics (physics.app-ph)", "Instrumentation and Detectors (physics.ins-det)", "Aptamers", " Nucleotide", "01 natural sciences", "0104 chemical sciences", "03 medical and health sciences", "0302 clinical medicine", "Quantitative Biology - Biomolecules", "Limit of Detection", "FOS: Biological sciences", "Matrix Metalloproteinase 2", "Humans", "Graphite", "Gold", "0210 nano-technology", "Oxidation-Reduction", "Electrodes"]}, "links": [{"href": "https://doi.org/2311.04674"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Talanta", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2311.04674", "name": "item", "description": "2311.04674", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2311.04674"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-07-01T00:00:00Z"}}, {"id": "2403.13594", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:22:48Z", "type": "Journal Article", "created": "2024-03-20", "title": "Optimizing Transparent Electrodes: Interplay of High Purity Swcnts Network and a Polymer", "description": "Open AccessThe discovery of transparent electrodes led to the development of optoelectronic devices such as OLEDs, LCDs, touchscreens, IR sensors, etc. Since ITO has many drawbacks in respect of its production cost and limited transparency in IR, carbon nanotubes (CNTs) have been a potential replacement for ITO due to their exceptional electrical and optical properties, especially in the IR region. In this work, we present the development of a CNT-polymer composite thin film that exhibits outstanding transparency across both visible and IR spectra prepared by layer-by-layer (LbL) technique. This approach not only ensures uniform integration and crosslinking of CNTs into lightweight matrices, but also represents a cost-effective method for producing transparent electrodes with remarkable optical and electrical properties. The produced films achieved a transparency above 80% in the UV-VIS range and approximately 70% in the mid-IR range. The sheet resistance of the fabricated thin films was measured at about 4 kOhm/sq, showing a tendency to decrease with the number of bilayers. Furthermore, in this work we have investigated electrical properties and transport mechanisms in more detail with computational analysis. Computational analysis was performed to better understand the electrical behavior of nanotube-polymer junctions in the interbundle structure. Based on all results, we propose that the transparent electrodes with 4 and 6 bilayers are the most optimal structures in terms of optical and electrical properties.", "keywords": ["Condensed Matter - Materials Science", "8. Economic growth", "Materials Science (cond-mat.mtrl-sci)", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "7. Clean energy"], "contacts": [{"organization": "Joksovi\u0107, Sara, Stanojev, Jovana, Samard\u017ei\u0107, Nata\u0161a, Bajac, Branimir,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/2403.13594"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Synthetic%20Metals", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2403.13594", "name": "item", "description": "2403.13594", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2403.13594"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-01-01T00:00:00Z"}}, {"id": "2404.12017", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:22:48Z", "type": "Journal Article", "created": "2024-08-17", "title": "Green and solid state reduction of GO monolayers sandwiched between Arachidic acid LB layers", "description": "Open AccessA novel, single step and environment friendly solid state approach for reduction of graphene oxide (GO) monolayers has been demonstrated, in which, arachidic acid-GO-arachidic acid (AA-GO-AA) sandwich structure obtained by Langmuir-Blodgett (LB) technique was heat treated at moderate temperatures to obtain RGO sheets. Heat treatment of AA-GO-AA sandwich structure at 200 C results in substantial reduction of GO, with concurrent removal of AA molecules. Such developed RGO sheets possess sp2-C content of 69%, O/C ratio of 0.17 and significantly reduced I(D) and I(G) ratio of ~1.1. Ultraviolet photoelectron spectroscopy (UPS) studies on RGO sheets evidenced significant increase in density of states in immediate vicinity of Fermi level and decrease in work function after reduction. Bottom gated field effect transistors fabricated with isolated RGO sheets displayed charge neutrality point at a positive gate voltage, indicating p-type nature, consistent with UPS and electrostatic force microscopy (EFM) measurement results.The RGO sheets obtained by heat treatment of AA-GO-AA sandwich structure exhibited conductivity in the range of 2-7Scm-1 and field effect mobility of 0.03-2cm2V-1s-1, which are consistent with values reported for RGO sheets obtained by various chemical or thermal reduction procedures.The extent of GO reduction is determined primarily by proximity of AA molecules and found to be unaltered with either escalation of heat treatment temperature or increase of AA content in sandwich structure. The single-step GO reduction approach demonstrated in this work is an effective way for development of RGO monolayers with high structural quality towards graphene-based electronic device applications.", "keywords": ["Condensed Matter - Materials Science", "Condensed Matter - Mesoscale and Nanoscale Physics", "Mesoscale and Nanoscale Physics (cond-mat.mes-hall)", "Materials Science (cond-mat.mtrl-sci)", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "7. Clean energy"], "contacts": [{"organization": "Botcha, V. Divakar, Narayanam, Pavan K.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/2404.12017"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Diamond%20and%20Related%20Materials", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2404.12017", "name": "item", "description": "2404.12017", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2404.12017"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-10-01T00:00:00Z"}}, {"id": "2503.08744", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:22:50Z", "type": "Journal Article", "created": "2025-03-04", "title": "Novel design of biplanar electrodes in a multiwell plate for transepithelial electrical resistance measurement in 3D cell cultures", "description": "Recent advances in microphysiological systems have underscored the need for novel sensing and monitoring systems specifically designed for three-dimensional (3D) cell culture. In this article, an original architecture of a cell-culture multiwell plate embedding an impedance spectroscopy monitoring system is presented alongside a fast and straightforward fabrication process that allows scale-up production for further industrial exploitation. Our proposed approach involves a biplanar electrode configuration, enabling real-time and high-throughput impedance spectroscopy measurements through a 3D biological construct. This configuration not only allows for non-invasive electrical characterization of a 3D tissue layer, but also offers the capability to thoroughly analyze and understand the characteristics of any type of biological barrier and 3D tissue. The proof of concept for the developed system has been effectively validated for measuring impedance across both endothelial and mouse myoblast monolayers cultured within a 3D collagen biomimicking matrix. Moreover, transepithelial electrical resistance values, which vary with cell type and duration of cell culture, were effectively determined from the impedance spectra. The obtained results showed that the proposed device allows the monitoring of tight junction and cell layer formation over time without inducing alterations to the cells.", "keywords": ["Condensed Matter - Materials Science", "Biological Physics (physics.bio-ph)", "Materials Science (cond-mat.mtrl-sci)", "FOS: Physical sciences", "Physics - Biological Physics", "Physics - Applied Physics", "Applied Physics (physics.app-ph)"]}, "links": [{"href": "https://doi.org/2503.08744"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Sensors%20and%20Actuators%20A%3A%20Physical", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2503.08744", "name": "item", "description": "2503.08744", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2503.08744"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-01-01T00:00:00Z"}}, {"id": "3098412917", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:23:07Z", "type": "Journal Article", "created": "2020-07-01", "title": "Berreman Embedded Eigenstates for Narrow-Band Absorption and Thermal Emission", "description": "Embedded eigenstates are nonradiative modes of an open structure with momentum compatible with radiation, yet characterized by unboundedly large Q-factors. Traditionally, these states originate from total destructive interference of radiation from two or more non-orthogonal modes in periodic structures. In this work, we demonstrate a novel class of embedded eigenstates based on Berreman modes in epsilon-near-zero (ENZ) layered materials and propose realistic silicon carbide (SiC) structures supporting high-Q (~10^3) resonances based on these principles. The proposed structures demonstrate strong absorption in a narrow spectral and angular range, giving rise to quasi-coherent and highly directive thermal emission.", "keywords": ["0103 physical sciences", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "02 engineering and technology", "0210 nano-technology", "01 natural sciences", "7. Clean energy", "Physics - Optics", "Optics (physics.optics)"]}, "links": [{"href": "https://doi.org/3098412917"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Physical%20Review%20Applied", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "3098412917", "name": "item", "description": "3098412917", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/3098412917"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-06-30T00:00:00Z"}}, {"id": "3128189881", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:23:09Z", "type": "Journal Article", "created": "2021-02-01", "title": "Glide-Symmetric Acoustic Waveguides for Extreme Sensing and Isolation", "description": "Glide symmetry offers new degrees of freedom to engineer the properties of periodic structures, and thus it has been exploited in various electromagnetic structures. However, so far there has been little exploration on the impact that glide symmetry can offer in the field of acoustics. In this paper, we explore glide-symmetric acoustic waveguides, highlighting their dispersion characteristics and guiding properties and demonstrating opportunities in the context of acoustic devices. Here we analytically derive their dispersive features applying a semi-analytical mode matching technique. We then demonstrate how the unusual dispersion properties of glide-symmetric acoustic waveguides can be used to achieve very sharp frequency responses. Based on these results, we propose a sensing platform for liquid analytes that exhibits large sensitivity and linearity. Furthermore, by introducing fluid motion, we leverage these responses to design an acoustic isolator based on acoustic Mach-Zehnder interferometry, whose design is more favorable in terms of footprint and complexity in comparison to other acoustic nonreciprocal devices that do not rely on glide symmetry.", "keywords": ["0202 electrical engineering", " electronic engineering", " information engineering", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "02 engineering and technology"], "contacts": [{"organization": "Jankovi\u0107, Nikolina, Al\u00f9, Andrea,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/3128189881"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Physical%20Review%20Applied", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "3128189881", "name": "item", "description": "3128189881", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/3128189881"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-02-01T00:00:00Z"}}, {"id": "3157549256", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:23:10Z", "type": "Journal Article", "created": "2021-04-28", "title": "Topological scattering singularities and embedded eigenstates for polarization control and sensing applications", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Epsilon-near-zero and epsilon near-pole materials enable reflective systems supporting a class of symmetry-protected and accidental embedded eigenstates (EEs) characterized by a diverging phase resonance. Here we show that pairs of topologically protected scattering singularities necessarily emerge from EEs when a non-Hermitian parameter is introduced, lifting the degeneracy between oppositely charged singularities. The underlying topological charges are characterized by an integer winding number and appear as phase vortices of the complex reflection coefficient. By creating and annihilating them, we show that these singularities obey charge conservation, and provide versatile control of amplitude, phase, and polarization in reflection, with potential applications for polarization control and sensing.</p></article>", "keywords": ["0103 physical sciences", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "01 natural sciences", "Physics - Optics", "Optics (physics.optics)"]}, "links": [{"href": "https://doi.org/3157549256"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Photonics%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "3157549256", "name": "item", "description": "3157549256", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/3157549256"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-06-28T00:00:00Z"}}, {"id": "91199b7c79d64dce831302cf0b0eee46", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:26:28Z", "type": "Journal Article", "created": "2023-10-18", "title": "Asymmetric spoof-fluid-spoof acoustic waveguide and its application as a  CO2  sensor", "description": "Open AccessWe study pressure acoustic propagation in asymmetric spoof-fluid-spoof acoustic waveguides and its potential application in acoustic gas sensors. First, a stable and efficient analytical method is established for fast calculation of the dispersion curves based on spectral expansion and enforcement of continuity between segments at suitable collocation points. The analysis is validated by a commercial finite element software. The geometric design of the waveguide is then optimized for the emergence of a nearly-flat dispersion curve associated with vertical geometric asymmetry. The waveguide is fabricated using 3D printing technology and the measurement results corroborate the numerical simulations. Based on the nearly-flat dispersion curve supported by this waveguide, a CO$_2$ sensor is proposed allowing to relate the phase difference measured between two points in the waveguide to the composition of the gas in the waveguide. The proposed sensor is experimentally validated in a controlled environment and the measurement results match the computational predictions well. The sensor is robust with respect to noise and signal-recording duration due to fast phase measurements and shows high sensitivity to gas concentration due to reliance on the second, nearly-flat, dispersion curve. In addition, the sensor is label-free and low-cost, while exhibiting rapid response, low-maintenance requirements and potential for measurements in a wide range of CO$_2$ concentrations without saturation issues.", "keywords": ["Signal Processing (eess.SP)", "FOS: Electrical engineering", " electronic engineering", " information engineering", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "Electrical Engineering and Systems Science - Signal Processing"]}, "links": [{"href": "https://doi.org/http://arxiv.org/abs/2305.00815"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Physical%20Review%20Applied", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "91199b7c79d64dce831302cf0b0eee46", "name": "item", "description": "91199b7c79d64dce831302cf0b0eee46", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/91199b7c79d64dce831302cf0b0eee46"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-10-18T00:00:00Z"}}, {"id": "d0a4c248c7d8054fd104eb014334dba4", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:26:28Z", "type": "Journal Article", "created": "2024-02-28", "title": "Multiparameter Water Quality Monitoring System for Continuous Monitoring of Fresh Waters", "description": "Due to the global water crisis there is a strong need for real-time water quality monitoring with high temporal and spatial resolution. This paper presents an economical multiparameter water quality monitoring system for continuous monitoring of fresh waters. It is based on a sensor node that integrates turbidity, temperature, and conductivity sensors, a miniature eighteen-channel spectrophotometer, and a sensor for the detection of thermotolerant coliforms, which is a major novelty of the system. Due to the influence of water impurities on the measurement of thermotolerant coliforms, a heuristic method has been developed to mitigate this effect. Moreover, the sensor is low power and with an integrated Long Range Wide Area Network module, it comprises a system that is wireless sensor network ready and can send data to a dedicated server. In addition, the system is submersible, capable of long-term field operation, and significantly cheaper in comparison to existing solutions. The purpose of the system is to give early warning of incidental pollution situations, thus enabling authorities to take action regarding further prevention of such occasions.", "keywords": ["13. Climate action", "0208 environmental biotechnology", "0207 environmental engineering", "FOS: Physical sciences", "14. Life underwater", "Physics - Applied Physics", "02 engineering and technology", "Applied Physics (physics.app-ph)", "6. Clean water"]}, "links": [{"href": "http://xplorestaging.ieee.org/ielx7/7361/10487994/10453458.pdf?arnumber=10453458"}, {"href": "https://doi.org/http://arxiv.org/abs/2307.11630"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/IEEE%20Sensors%20Journal", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "d0a4c248c7d8054fd104eb014334dba4", "name": "item", "description": "d0a4c248c7d8054fd104eb014334dba4", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/d0a4c248c7d8054fd104eb014334dba4"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-04-01T00:00:00Z"}}, {"id": "5dd90e8c4bc5717133be75179450b47d", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:26:28Z", "type": "Journal Article", "created": "2024-03-20", "title": "Optimizing Transparent Electrodes: Interplay of High Purity Swcnts Network and a Polymer", "description": "Open AccessThe discovery of transparent electrodes led to the development of optoelectronic devices such as OLEDs, LCDs, touchscreens, IR sensors, etc. Since ITO has many drawbacks in respect of its production cost and limited transparency in IR, carbon nanotubes (CNTs) have been a potential replacement for ITO due to their exceptional electrical and optical properties, especially in the IR region. In this work, we present the development of a CNT-polymer composite thin film that exhibits outstanding transparency across both visible and IR spectra prepared by layer-by-layer (LbL) technique. This approach not only ensures uniform integration and crosslinking of CNTs into lightweight matrices, but also represents a cost-effective method for producing transparent electrodes with remarkable optical and electrical properties. The produced films achieved a transparency above 80% in the UV-VIS range and approximately 70% in the mid-IR range. The sheet resistance of the fabricated thin films was measured at about 4 kOhm/sq, showing a tendency to decrease with the number of bilayers. Furthermore, in this work we have investigated electrical properties and transport mechanisms in more detail with computational analysis. Computational analysis was performed to better understand the electrical behavior of nanotube-polymer junctions in the interbundle structure. Based on all results, we propose that the transparent electrodes with 4 and 6 bilayers are the most optimal structures in terms of optical and electrical properties.", "keywords": ["Condensed Matter - Materials Science", "8. Economic growth", "Materials Science (cond-mat.mtrl-sci)", "FOS: Physical sciences", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "7. Clean energy"], "contacts": [{"organization": "Joksovi\u0107, Sara, Stanojev, Jovana, Samard\u017ei\u0107, Nata\u0161a, Bajac, Branimir,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/http://arxiv.org/abs/2403.13594"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Synthetic%20Metals", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "5dd90e8c4bc5717133be75179450b47d", "name": "item", "description": "5dd90e8c4bc5717133be75179450b47d", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/5dd90e8c4bc5717133be75179450b47d"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-01-01T00:00:00Z"}}, {"id": "9a02eae9234b89757f36dde3282e787e", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-09-21T16:26:28Z", "type": "Journal Article", "created": "2025-03-04", "title": "Novel design of biplanar electrodes in a multiwell plate for transepithelial electrical resistance measurement in 3D cell cultures", "description": "Recent advances in microphysiological systems have underscored the need for novel sensing and monitoring systems specifically designed for three-dimensional (3D) cell culture. In this article, an original architecture of a cell-culture multiwell plate embedding an impedance spectroscopy monitoring system is presented alongside a fast and straightforward fabrication process that allows scale-up production for further industrial exploitation. Our proposed approach involves a biplanar electrode configuration, enabling real-time and high-throughput impedance spectroscopy measurements through a 3D biological construct. This configuration not only allows for non-invasive electrical characterization of a 3D tissue layer, but also offers the capability to thoroughly analyze and understand the characteristics of any type of biological barrier and 3D tissue. The proof of concept for the developed system has been effectively validated for measuring impedance across both endothelial and mouse myoblast monolayers cultured within a 3D collagen biomimicking matrix. Moreover, transepithelial electrical resistance values, which vary with cell type and duration of cell culture, were effectively determined from the impedance spectra. The obtained results showed that the proposed device allows the monitoring of tight junction and cell layer formation over time without inducing alterations to the cells.", "keywords": ["Condensed Matter - Materials Science", "Biological Physics (physics.bio-ph)", "Materials Science (cond-mat.mtrl-sci)", "FOS: Physical sciences", "Physics - Biological Physics", "Physics - Applied Physics", "Applied Physics (physics.app-ph)"]}, "links": [{"href": "https://doi.org/http://arxiv.org/abs/2503.08744"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Sensors%20and%20Actuators%20A%3A%20Physical", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "9a02eae9234b89757f36dde3282e787e", "name": "item", "description": "9a02eae9234b89757f36dde3282e787e", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/9a02eae9234b89757f36dde3282e787e"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-01-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Physics+-+Applied+Physics&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Physics+-+Applied+Physics&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Physics+-+Applied+Physics&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Physics+-+Applied+Physics&offset=48", "hreflang": "en-US"}], "numberMatched": 48, "numberReturned": 48, "distributedFeatures": [], "timeStamp": "2026-09-21T22:45:49.769660Z"}