Spectral measurements with hybrid LMR and SAW platform for dual parameter sensing
| Autor: | Ismel Dominguez, Ignacio del Villar, Jesús Corres, Jean-Luc Lachaud, Yang Yang, Hamida Hallil, Corinne Dejous, Ignacio R. Matias |
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| Přispěvatelé: | Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación, Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza Saila, Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa. Institute of Smart Cities - ISC, Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | The Analyst. 147:5477-5485 |
| ISSN: | 1364-5528 0003-2654 |
| DOI: | 10.1039/d2an01371a |
| Popis: | Lossy mode resonance (LMR)-based optical sensors change their wavelength upon contact with substances or gases. This allows developing applications to detect the refractive index of the surrounding medium and even the thickness of the biolayers deposited on the waveguide. In the same way, when acoustic sensors are in contact with a liquid, it is possible to determine parameters, especially mechanical ones such as shape of the particle or molecule, mass load, elastic constants and viscosity of the liquid. This work reports the development of a system that combines LMR with surface acoustic wave (SAW) technologies to characterize a liquid in terms of its refractive index and viscosity simultaneously. Conveniently prepared glucose solutions are used for sensor calibration. The refractive index of the solutions ranges from 1.33 to 1.41 and its viscosity ranges from 1.005 mPa·s to 9 mPa·s, respectively. A sensitivity of 332 nm per RIU has been achieved with the optical sensor while the acoustic sensor has shown a sensitivity of −1.5 dB/(mPa·s). This new combinational concept could be expanded to the development of more demanding applications such as chemical sensors or biosensors. The authors would like to acknowledge the partial support to the Spanish Ministry of Economy and Competitiveness PID2019-106070RB-I00 and PID2019-106231RB-I00 research funds and the pre-doctoral research grant of the Public University of Navarra. |
| Databáze: | OpenAIRE |
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