OPENAIRE OpenAire Sygma CRIS UNS (Current Research Information System University of Novi Sad) UnpayWall Multidisciplinary Digital Publishing Institute ZENODO DOAJ Crossref Microsoft Academic Graph Europe PubMed Central PubMed Central European Union Open Data Portal http://www.mdpi.com/1424-8220/21/16/5477/pdf https://www.mdpi.com/1424-8220/21/16/5477/pdf https://doi.org/10.3390/s21165477 Sensors Open Access 2021-08-16 <?xml version='1.0' encoding='UTF-8'?><article><p>In this paper, a microwave microfluidic sensor based on spoof surface plasmon polaritons (SSPPs) was proposed for ultrasensitive detection of dielectric constant. A novel unit cell for the SSPP structure is proposed and its behaviour and sensing potential analysed in detail. Based on the proposed cell, the SSPP microwave structure with a microfluidic reservoir is designed as a multilayer configuration to serve as a sensing platform for liquid analytes. The sensor is realized using a combination of rapid, cost-effective technologies of xurography, laser micromachining, and cold lamination bonding, and its potential is validated in the experiments with edible oil samples. The results demonstrate high sensitivity (850 MHz/epsilon unit) and excellent linearity (R2 = 0.9802) of the sensor, which, together with its low-cost and simple fabrication, make the proposed sensor an excellent candidate for the detection of small changes in the dielectric constant of edible oils and other liquid analytes.</p></article> spoof surface plasmon polariton (SSPP) edible oils permittivity sensing Chemical technology microwave sensor 0202 electrical engineering, electronic engineering, information engineering TP1-1185 02 engineering and technology Surface Plasmon Resonance Microwaves 0210 nano-technology Article Podunavac Ivana, Radonic Vasa, Bengin Vesna, Jankovic Nikolina, 2021-08-13 journalpaper <?xml version='1.0' encoding='UTF-8'?><article><p>In this paper, a microwave microfluidic sensor based on spoof surface plasmon polaritons (SSPPs) was proposed for ultrasensitive detection of dielectric constant. A novel unit cell for the SSPP structure is proposed and its behaviour and sensing potential analysed in detail. Based on the proposed cell, the SSPP microwave structure with a microfluidic reservoir is designed as a multilayer configuration to serve as a sensing platform for liquid analytes. The sensor is realized using a combination of rapid, cost-effective technologies of xurography, laser micromachining, and cold lamination bonding, and its potential is validated in the experiments with edible oil samples. The results demonstrate high sensitivity (850 MHz/epsilon unit) and excellent linearity (R2 = 0.9802) of the sensor, which, together with its low-cost and simple fabrication, make the proposed sensor an excellent candidate for the detection of small changes in the dielectric constant of edible oils and other liquid analytes.</p></article> Microwave Spoof Surface Plasmon Polariton-Based Sensor for Ultrasensitive Detection of Liquid Analyte Dielectric Constant 10.3390/s21165477 739570