{"type": "FeatureCollection", "features": [{"id": "10.1117/12.2624440", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:18:07Z", "type": "Journal Article", "created": "2022-05-19", "title": "Perfluorinated polymer fibre Bragg grating sensors for distributed low-dose clinical X-ray measurements", "description": "Optical fibres have played an important role in the advancement of real-time dosimetry in clinical applications in recent years. Significant work has been done to increase precision and accuracy in detecting radiation doses during treatment, to avoid the negative effect that can ensue from irradiating healthy tissue around the tumour. The drive to develop distributed measurement in optical fibres has been limited to the slow scanning speed systems from optical time domain reflectometry (OTDR), however for radiotherapy dosimetry, with often short radiation pulse durations, fibre Bragg grating (FBG) interrogation is a better alternative because of the fast-scanning speed. The work presented here includes the preliminary results in the characterisation of CYTOP FBGs on exposure to X-ray radiation emitted from a clinical linear accelerator (linac) machine. A blue shifted linear response of the Bragg wavelength with sensitivity of 6.655 pm/Gy, 6.519 pm/Gy and 7.153 pm/Gy at the three main peaks (1522 nm, 1542 and 1561 nm), was recorded for a 9 Gy of radiation at a dose rate of 1.758 Gy/min with an amplitude fluctuation within the duration of radiation. The response demonstrates the potential for its use in low dose radiation dosimetry, providing for quasi-distributed sensing in radiotherapy.", "keywords": ["0211 other engineering and technologies", "fibre optics dosimetry", "02 engineering and technology", "Electrical Engineering - Electronic Engineering - Information Engineering", "X-ray", "Fibre Bragg grating", "Optical fibres", "Radiation Monitoring", "Dosimetry", "fibre Bragg grating sensors", "0202 electrical engineering", " electronic engineering", " information engineering", "fibre optics sensors", "Engineering and Technology", "CYTOP", "low-dose clinical X-ray measurements"]}, "links": [{"href": "https://doi.org/10.1117/12.2624440"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Micro-Structured%20and%20Specialty%20Optical%20Fibres%20VII", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1117/12.2624440", "name": "item", "description": "10.1117/12.2624440", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1117/12.2624440"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-05-19T00:00:00Z"}}, {"id": "10.1016/j.sna.2025.116656", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-09-22T16:16:26Z", "type": "Journal Article", "created": "2025-05-03", "title": "Surface plasmon resonance sensor tailored to detect dielectric constants within the range of synthetic polymers", "description": "Plastic pollution poses a significant environmental concern; however, current methods for identifying and characterising synthetic polymers often require time-consuming procedures or rely on sample degradation. This study demonstrates the direct detection of a broad range of synthetic polymers using Surface Plasmon Resonance (SPR). By tailoring the prism design in the Kretschmann configuration, we extended the dynamic refractive index range of the sensor to encompass typical polymer refractive indices (\u223c1.49\u20131.58). Initial validation with refractive index oils confirmed the prism\u2019s ability to detect materials within this range. Subsequently, SPR curves were obtained for nine different polymers, each exhibiting distinctive resonance shifts that may enable polymer-specific identification. Notably, these results also demonstrate SPR\u2019s capability to detect pigmented materials, which is often challenging using other techniques. This direct detection strategy avoids the need for complex spectra analysis procedures, thereby improving measurement efficiency. Finally, we present the potential integration of SPR imaging to explore additional parameters of plastic pollution, paving the way for more comprehensive environmental monitoring and assessment. Our approach holds promise for advancing polymer analysis with SPR by decreasing the analysis time using a direct detection method and expanding the range of materials that can be analysed.", "keywords": ["Plasmonic sensor", "Optics sensor", "SPR", "Angular interrogation"]}, "links": [{"href": "https://doi.org/10.1016/j.sna.2025.116656"}, {"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": "10.1016/j.sna.2025.116656", "name": "item", "description": "10.1016/j.sna.2025.116656", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.sna.2025.116656"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2025-09-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Optics+sensor&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=Optics+sensor&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=Optics+sensor&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Optics+sensor&offset=2", "hreflang": "en-US"}], "numberMatched": 2, "numberReturned": 2, "distributedFeatures": [], "timeStamp": "2026-09-22T17:49:50.617835Z"}