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Start Over Descriptor "chemical gas sensor" Topic inkjet printing
8 results on '"chemical gas sensor"'

1. Differential Passive Microwave Planar Resonator- Based Sensor for Chemical Particle Detection in Polluted Environments.

Author

Hallil, Hamida, Bahoumina, Prince, Pieper, Katrin, Lachaud, Jean Luc, Rebiere, Dominique, Abdelghani, Aymen, Frigui, Kamel, Bila, Stephane, Baillargeat, Dominique, Zhang, Qing, Coquet, Philippe, Pichonat, Emmanuelle, Happy, Henri, and Dejous, Corinne

Abstract

This paper presents an inkjet-printed differential passive microwave planar resonator-based sensor for toxic vapor detection at room temperature. Two devices are presented, with 5 (D1) and 50 (D2) layers of composite sensitive film (PEDOT:PSS-MWCNTs). Each one consists of two band-pass resonators with the fundamental modes around 2.5 and 2.7 GHz. Theoretical and experimental results are presented, both devices show sensitivity to ethanol vapor ranging from 500 to 1300 ppm according to the magnitude and resonant frequency shifts of their scattering parameters (S-parameters). Limitations due to a continuous drift on both the reference and the sensitive channels are discussed. Though further improvements are needed, such sensor is a good candidate for integration into real-time multi-sensing platforms adaptable for the Internet of Things. [ABSTRACT FROM AUTHOR]

Published
2019
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2. Microwave flexible gas sensor based on polymer multi wall carbon nanotubes sensitive layer.

Author

Bahoumina, P., Hallil, H., Lachaud, J.L., Abdelghani, A., Frigui, K., Bila, S., Baillargeat, D., Ravichandran, A., Coquet, P., Paragua, C., Pichonat, E., Happy, H., Rebière, D., and Dejous, C.

Subjects
*GAS detectors, *MULTIWALLED carbon nanotubes, *POLYMERS, *MICROWAVES, *POLYSTYRENE, *INK-jet printing
Abstract

This study presents the feasibility and the first real time results of microwave flexible gas sensor based on poly (3,4-ethylenedioxythiophene) polystyrene sulfonate – multi wall carbon nanotubes (PEDOT:PSS-MWCNTs) as sensitive material, deposited by inkjet printing technology. The sensor is suitable for wireless applications, it consists of two stub resonators on kapton in order to provide a differential detection. The final aim of this work is to develop a low cost communicating sensor which can be integrated into real time multi sensing platform dedicated to the applications requiring low power consumption and adaptable for the Internet of Things (IoT), in order to do the detection of harmful gases such as Volatile Organic Compounds (VOCs). Preliminary results have shown a large influence of ethanol concentration on the electrical properties of the passive resonators at radio-frequency range. These vapors have induced additional insertion losses and frequency shifts on the first resonant frequency mode around 0.65 GHz. The sensor sensitivity to ethanol vapors exposition has been estimated to −642.9 Hz/ppm and −7 μdB/ppm for resonant frequency and insertion losses variations in differential mode, respectively, according to the values at 4 min of exposure to 500, 1000 and 2000 ppm. To deepen the study of the sensor, we have focused on the influence of ethanol on the conductivity of the sensitive layer, in terms of repeatability and sensitivity. We proposed a way of real-time reconstruction of the response by representing the difference of the insertion losses as well as the difference of frequencies calculated on the basis of the phase average value within a specified frequency range near the resonance. This lead to estimate a sensitivity of −9 μdB/ppm and 648.1 Hz/ppm, respectively, for ethanol concentrations ranging from 500 ppm to 2000 ppm at 10 min of exposure. [ABSTRACT FROM AUTHOR]

Published
2017
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3. Chemical Gas Sensor Based on a Flexible Capacitive Microwave Transducer Associated with a Sensitive Carbon Composite Polymer Film

Author

Prince Bahoumina, Hamida Hallil, Jean-Luc Lachaud, Aymen Abdelghani, Kamel Frigui, Stephane Bila, Dominique Baillargeat, Qing Zhang, Phillipe Coquet, Carlos Paragua, Emmanuelle Pichonat, Henri Happy, Dominique Rebière, and Corinne Dejous

Subjects
chemical gas sensor, electromagnetic transduction, inkjet printing, flexible substrate, carbon materials, microwave device, resonator, General Works
Abstract

This communication presents results on the feasibility of an inkjet printed chemical gas sensor suitable for a real time multi-sensing platform. The prototype targets volatile organic compounds (VOCs) such as ethanol vapor to monitor environmental pollution. The designed and ink-jet printed microwave sensor is presented. Preliminary results have shown the influence of ethanol vapor on the electrical properties of the sensor at microwave frequency range. The sensor’s sensitivity to ethanol vapor has been estimated to −2.48 kHz/ppm. The final aim of this work is to develop a low cost sensor for Internet of Things (IoT) applications.

Published
2017
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4. Capacitive microwave sensor for toxic vapor detection in an atmospheric environment

Author

Bahoumina, P., Hallil, H., Pieper, K., Lachaud, J., Rebière, D., Corinne Dejous, Abdelghani, A., Kamel Frigui, Stéphane Bila, Baillargeat, D., Zhang, Q., Coquet, P., Pichonat, E., Happy, H., Laboratoire de l'intégration, du matériau au système (IMS), Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), Laboratoire des Composites Thermostructuraux (LCTS), Centre National de la Recherche Scientifique (CNRS)-Snecma-SAFRAN group-Université de Bordeaux (UB)-Institut de Chimie du CNRS (INC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement - Direction Centre-Est (Cerema Direction Centre-Est), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement (Cerema), Systèmes RF (XLIM-SRF), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Shanghai Inst Opt & Fine Mech, Key Lab Mat Sci & Technol High Power Lasers, Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Carbon-IEMN (CARBON-IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), CNRS International - NTU - Thales Research Alliance (CINTRA), THALES [France]-Nanyang Technological University [Singapour]-Centre National de la Recherche Scientifique (CNRS), Université de Bordeaux (UB)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut de Chimie du CNRS (INC)-Snecma-SAFRAN group-Centre National de la Recherche Scientifique (CNRS), Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA), Université catholique de Lille (UCL)-Université catholique de Lille (UCL), Carbon - IEMN (CARBON - IEMN), The authors are grateful to the French National Research Agency for support under project ANR-13-BS03-0010 andthe French RENATECH network (French National Nanofabrication Platform), as well as the French Embassy of Singapore (Merlion project)., Renatech Network, ANR-13-BS03-0010,CAMUS,Microcapteurs de gaz ultrasensibles à transduction micro-onde et matériaux carbonés.(2013), Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université Sciences et Technologies - Bordeaux 1, and CINTRA CNRS/NTU/THALES, UMI 3288

Subjects
inkjet printing, Physics - Instrumentation and Detectors, chemical gas sensor, flexible microwave resonator, FOS: Physical sciences, Physics - Applied Physics, Instrumentation and Detectors (physics.ins-det), Applied Physics (physics.app-ph), composite polymer carbon nanoparticles, [SPI.TRON]Engineering Sciences [physics]/Electronics, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, capacitive transducer, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics
Abstract

Présenté à IEEE Sensors, Oct 2017, Glasgow, United Kingdom ⟨10.1109/ICSENS.2017.8234281⟩; This paper presents an inkjet printing capacitive microwave sensor for toxic vapor detection. The designed sensors were presented and fabricated with success. The experiments show sensitivity to ethanol vapor according to the S parameters. It is equal to 0.9 kHz/ppm and 1.3 kHz/ppm for the sensors based on 5 and 50 sensitive layers respectively. This sensor will be integrated into real-time multi-sensing platforms adaptable for the Internet of Things (IoT).

Published
2019
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5. Differential passive microwave planar resonator-based sensor for chemical particle detection in polluted environments

Author

Emmanuelle Pichonat, Aymen Abdelghani, Dominique Baillargeat, Philippe Coquet, Katrin Pieper, Corinne Dejous, Stephane Bila, Hamida Hallil, Qing Zhang, Dominique Rebière, Jean Luc Lachaud, Prince Bahoumina, Henri Happy, Kamel Frigui, Laboratoire de l'intégration, du matériau au système (IMS), Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), CNRS International NTU THALES Research Alliance (UMI CINTRA), THALES-Nanyang Technological University [Singapour]-Centre National de la Recherche Scientifique (CNRS), Systèmes RF (XLIM-SRF), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Nanayang Technological University (NTU), Nanayang Technological University, CINTRA / SEEE Nanyang Technological University, Nanyang Technological University [Singapour], Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Carbon-IEMN (CARBON-IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), ANR-13-BS03-0010,CAMUS,Microcapteurs de gaz ultrasensibles à transduction micro-onde et matériaux carbonés.(2013), ANR-10-IDEX-0003,IDEX BORDEAUX,Initiative d'excellence de l'Université de Bordeaux(2010), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), CNRS International - NTU - Thales Research Alliance (CINTRA), THALES [France]-Nanyang Technological University [Singapour]-Centre National de la Recherche Scientifique (CNRS), Carbon - IEMN (CARBON - IEMN), and Research Techno Plaza

Subjects
Materials science, Chemical Gas Sensor, composite polymer carbon nanoparticles, 01 natural sciences, Resonator, Planar, PEDOT:PSS, Chemical gas sensor, Scattering parameters, passive transducer, Sensitivity (control systems), Composite Polymer Carbon Nanoparticles, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Electrical and Electronic Engineering, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Instrumentation, inkjet printing, business.industry, 010401 analytical chemistry, flexible microwave resonator, Ranging, 0104 chemical sciences, Electrical and electronic engineering [Engineering], Optoelectronics, Particle, business, Microwave
Abstract

This paper presents an inkjet-printed differential passive microwave planar resonator-based sensor for toxic vapor detection at room temperature. Two devices are presented, with 5 (D1) and 50 (D2) layers of composite sensitive film (PEDOT:PSS-MWCNTs). Each one consists of two band-pass resonators with the fundamental modes around 2.5 and 2.7 GHz. Theoretical and experimental results are presented, both devices show sensitivity to ethanol vapor ranging from 500 to 1300 ppm according to the magnitude and resonant frequency shifts of their scattering parameters (S-parameters). Limitations due to a continuous drift on both the reference and the sensitive channels are discussed. Though further improvements are needed, such sensor is a good candidate for integration into real-time multi-sensing platforms adaptable for the Internet of Things. This work was supported in part by the French National Research Agency under Project ANR-13-BS03-0010 and in part by the “Investments for the future” Programme IdEx Bordeaux, under Grant ANR-10-IDEX-03-02.

Published
2019
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6. Chemical gas sensor based on a novel capacitive microwave flexible transducer and composite polymer carbon nanomaterials

Author

Hamida Hallil, Kamel Frigui, Prince Bahoumina, P. Coquet, J. L. Lachaud, Qing Zhang, Dominique Rebière, Dominique Baillargeat, Carlos Paragua, Corinne Dejous, Aymen Abdelghani, Stephane Bila, Henri Happy, Emmanuelle Pichonat, Laboratoire de l'intégration, du matériau au système (IMS), Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université Sciences et Technologies - Bordeaux 1, Systèmes RF (XLIM-SRF), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Nanyang Technological University [Singapour], CINTRA / SEEE Nanyang Technological University, Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Renatech Network, ANR-13-BS03-0010,CAMUS,Microcapteurs de gaz ultrasensibles à transduction micro-onde et matériaux carbonés.(2013), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS)

Subjects
electromagnetic transduction, Materials science, Physics - Instrumentation and Detectors, chemical gas sensor, Capacitive sensing, FOS: Physical sciences, Environmental pollution, 7. Clean energy, 01 natural sciences, Resonator, Planar, 0103 physical sciences, Wireless, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, 010302 applied physics, inkjet printing, carbon materials, business.industry, 010401 analytical chemistry, Instrumentation and Detectors (physics.ins-det), microwave device, 0104 chemical sciences, flexible substrate, Transducer, Optoelectronics, resonator, business, Sensitivity (electronics), Microwave
Abstract

International audience; This study presents the results on the feasibility of a resonant planar chemical capacitive sensor in the microwave frequency range suitable for gas detection and for wireless communications applications. The objective is to develop a low cost ultra-sensitive sensor that can be integrated into a real time multi-sensing platform. The first demonstrators target the detection of harmful gases such as volatile organic compounds (VOCs) to monitor environmental pollution.

Published
2018
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7. Chemical Gas Sensor Based on a Flexible Capacitive Microwave Transducer Associated with a Sensitive Carbon Composite Polymer Film

Author

Jean-Luc Lachaud, Aymen Abdelghani, Stephane Bila, Dominique Baillargeat, Emmanuelle Pichonat, Dominique Rebière, Henri Happy, Hamida Hallil, P. Coquet, Carlos Paragua, Corinne Dejous, Qing Zhang, Prince Bahoumina, Kamel Frigui, Laboratoire de l'intégration, du matériau au système (IMS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), Systèmes RF (XLIM-SRF), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Nanayang Technological University (NTU), CNRS International - NTU - Thales Research Alliance (CINTRA), THALES [France]-Nanyang Technological University [Singapour]-Centre National de la Recherche Scientifique (CNRS), Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Merlion, Renatech, ANR-13-BS03-0010,CAMUS,Microcapteurs de gaz ultrasensibles à transduction micro-onde et matériaux carbonés.(2013), Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université Sciences et Technologies - Bordeaux 1, Nanayang Technological University, CNRS International NTU THALES Research Alliance (UMI CINTRA), THALES-Nanyang Technological University [Singapour]-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, electromagnetic transduction, chemical gas sensor, Capacitive sensing, chemistry.chemical_element, Environmental pollution, lcsh:A, 01 natural sciences, 7. Clean energy, Resonator, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, inkjet printing, carbon materials, business.industry, 010401 analytical chemistry, Electrical engineering, 06 humanities and the arts, 060202 literary studies, microwave device, 0104 chemical sciences, Electrochemical gas sensor, flexible substrate, Transducer, chemistry, 0602 languages and literature, Optoelectronics, resonator, lcsh:General Works, business, Sensitivity (electronics), Carbon, Microwave
Abstract

International audience; This communication presents results on the feasibility of an inkjet printed chemical gas sensor suitable for a real time multi-sensing platform. The prototype targets volatile organic compounds (VOCs) such as ethanol vapor to monitor environmental pollution. The designed and ink-jet printed microwave sensor is presented. Preliminary results have shown the influence of ethanol vapor on the electrical properties of the sensor at microwave frequency range. The sensor's sensitivity to ethanol vapor has been estimated to-2.48 kHz/ppm. The final aim of this work is to develop a low cost sensor for Internet of Things (IoT) applications.

Published
2017
Full Text
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8. Microwave flexible gas sensor based on polymer multi wall carbon nanotubes sensitive layer

Author

Carlos Paragua, Prince Bahoumina, Aravind Ravichandran, Henri Happy, Hamida Hallil, Stephane Bila, Dominique Baillargeat, Corinne Dejous, Dominique Rebière, Philippe Coquet, Emmanuelle Pichonat, Kamel Frigui, Aymen Abdelghani, Jean-Luc Lachaud, Laboratoire de l'intégration, du matériau au système (IMS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), Systèmes RF (XLIM-SRF), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), CINTRA / SEEE Nanyang Technological University, Nanyang Technological University [Singapour], Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), French Embassy of Singapore (Merlion project), Renatech Network, ANR-13-BS03-0010,CAMUS,Microcapteurs de gaz ultrasensibles à transduction micro-onde et matériaux carbonés.(2013), Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université Sciences et Technologies - Bordeaux 1, French RENATECH network, and Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS)

Subjects
Microwave resonator, Materials science, Electromagnetic transduction, Analytical chemistry, 02 engineering and technology, Carbon nanotube, Conductivity, 7. Clean energy, 01 natural sciences, Polymer multi-wall carbon nanotubes composite, law.invention, Resonator, PEDOT:PSS, Chemical gas sensor, law, Materials Chemistry, Electrical and Electronic Engineering, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Instrumentation, business.industry, 010401 analytical chemistry, Metals and Alloys, Ranging, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Stub (electronics), Kapton, flexible substrate, Inkjet printing, Optoelectronics, 0210 nano-technology, business, Microwave
Abstract

International audience; This study presents the feasibility and the first real time results of microwave flexible gas sensor based on poly (3,4-ethylenedioxythiophene) polystyrene sulfonate – multi wall carbon nanotubes (PEDOT:PSS-MWCNTs) as sensitive material, deposited by inkjet printing technology. The sensor is suitable for wireless applications, it consists of two stub resonators on kapton in order to provide a differential detection. The final aim of this work is to develop a low cost communicating sensor which can be integrated into real time multi sensing platform dedicated to the applications requiring low power consumption and adaptable for the Internet of Things (IoT), in order to do the detection of harmful gases such as Volatile Organic Compounds (VOCs). Preliminary results have shown a large influence of ethanol concentration on the electrical properties of the passive resonators at radio-frequency range. These vapors have induced additional insertion losses and frequency shifts on the first resonant frequency mode around 0.65 GHz. The sensor sensitivity to ethanol vapors exposition has been estimated to -642.9 Hz/ppm and -7 μdB/ppm for resonant frequency and insertion losses variations in differential mode, respectively, according to the values at 4 minutes of exposure to 500, 1000 and 2000 ppm. To deepen the study of the sensor, we have focused on the influence of ethanol on the conductivity of the sensitive layer, in terms of repeatability and sensitivity. We proposed a way of real-time reconstruction of the response by representing the difference of the insertion losses as well as the difference of frequencies calculated on the basis of the phase average value within a specified frequency range near the resonance. This lead to estimate a sensitivity of -9 μdB/ppm and 648.1 Hz/ppm, respectively, for ethanol concentrations ranging from 500 ppm to 2000 ppm at 10 minutes of exposure.

Published
2017
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