Sensitive Microfluidic Sensor With Weakly Coupled Dumbbell Defect-Ground-Structure Resonators for Volume Fraction Determination in Liquid Mixtures

This letter presents a highly sensitive reflective-mode phase-variation permittivity sensor implemented by means of a pair of weakly coupled dumbbell defect-ground-structure (DB-DGS) resonators, the sensing elements, excited by a microstrip line. Weak magnetic coupling between the DB-DGS sensing res...

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Autores: Casacuberta, Pau|||0000-0002-2658-2200, Vélez, Paris|||0000-0001-6502-5987, Su, Lijuan|||0000-0002-4753-9340, Canalias, Xavier|||0009-0002-6473-7514, Martín, Ferran|||0000-0002-1494-9167
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:308658
Acceso en línea:https://ddd.uab.cat/record/308658
https://dx.doi.org/urn:doi:10.1109/LMWT.2024.3475210
Access Level:acceso abierto
Palabra clave:Resonators
Sensitivity
Couplings
Permittivity
Microstrip
Table lookup
Microstrip resonators
Integrated circuit modeling
Sensors
Phase measurement
Microfluidics
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spelling Sensitive Microfluidic Sensor With Weakly Coupled Dumbbell Defect-Ground-Structure Resonators for Volume Fraction Determination in Liquid MixturesCasacuberta, Pau|||0000-0002-2658-2200Vélez, Paris|||0000-0001-6502-5987Su, Lijuan|||0000-0002-4753-9340Canalias, Xavier|||0009-0002-6473-7514Martín, Ferran|||0000-0002-1494-9167ResonatorsSensitivityCouplingsPermittivityMicrostripTable lookupMicrostrip resonatorsIntegrated circuit modelingSensorsPhase measurementMicrofluidicsThis letter presents a highly sensitive reflective-mode phase-variation permittivity sensor implemented by means of a pair of weakly coupled dumbbell defect-ground-structure (DB-DGS) resonators, the sensing elements, excited by a microstrip line. Weak magnetic coupling between the DB-DGS sensing resonators generates two closely spaced resonances, the separation of which can be adjusted by the coupling level. Since the phase of the reflection coefficient experiences an excursion of 360° between such frequencies, the phase slope can be made arbitrarily high. Thus, by tuning the device within that frequency range, the phase response of the sensor is highly sensitive to variations in the dielectric constant of any material surrounding the DB-DGS resonators, e.g., a liquid under test (LUT). This configuration, with the sensing elements etched in the ground plane, avoids any interference between the driving line and the LUT, or any mechanical accessory required for operation, thereby enhancing the sensor's practical application. Specifically designed for detecting small concentration changes in mixtures of water and isopropanol, the sensor achieves a peak sensitivity of 293°/% and a resolution of less than 0.1% with the presented setup. 22024-01-0120242024-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/308658https://dx.doi.org/urn:doi:10.1109/LMWT.2024.3475210reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengAgencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2022-139181OB-I00Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2021/SGR-00192Ministerio de Ciencia, Innovación y Universidades https://doi.org/10.13039/100014440 FPU20/05700Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 PREP2022-000364Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 RYC2022-035819-Iopen accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:3086582026-06-06T12:50:31Z
dc.title.none.fl_str_mv Sensitive Microfluidic Sensor With Weakly Coupled Dumbbell Defect-Ground-Structure Resonators for Volume Fraction Determination in Liquid Mixtures
title Sensitive Microfluidic Sensor With Weakly Coupled Dumbbell Defect-Ground-Structure Resonators for Volume Fraction Determination in Liquid Mixtures
spellingShingle Sensitive Microfluidic Sensor With Weakly Coupled Dumbbell Defect-Ground-Structure Resonators for Volume Fraction Determination in Liquid Mixtures
Casacuberta, Pau|||0000-0002-2658-2200
Resonators
Sensitivity
Couplings
Permittivity
Microstrip
Table lookup
Microstrip resonators
Integrated circuit modeling
Sensors
Phase measurement
Microfluidics
title_short Sensitive Microfluidic Sensor With Weakly Coupled Dumbbell Defect-Ground-Structure Resonators for Volume Fraction Determination in Liquid Mixtures
title_full Sensitive Microfluidic Sensor With Weakly Coupled Dumbbell Defect-Ground-Structure Resonators for Volume Fraction Determination in Liquid Mixtures
title_fullStr Sensitive Microfluidic Sensor With Weakly Coupled Dumbbell Defect-Ground-Structure Resonators for Volume Fraction Determination in Liquid Mixtures
title_full_unstemmed Sensitive Microfluidic Sensor With Weakly Coupled Dumbbell Defect-Ground-Structure Resonators for Volume Fraction Determination in Liquid Mixtures
title_sort Sensitive Microfluidic Sensor With Weakly Coupled Dumbbell Defect-Ground-Structure Resonators for Volume Fraction Determination in Liquid Mixtures
dc.creator.none.fl_str_mv Casacuberta, Pau|||0000-0002-2658-2200
Vélez, Paris|||0000-0001-6502-5987
Su, Lijuan|||0000-0002-4753-9340
Canalias, Xavier|||0009-0002-6473-7514
Martín, Ferran|||0000-0002-1494-9167
author Casacuberta, Pau|||0000-0002-2658-2200
author_facet Casacuberta, Pau|||0000-0002-2658-2200
Vélez, Paris|||0000-0001-6502-5987
Su, Lijuan|||0000-0002-4753-9340
Canalias, Xavier|||0009-0002-6473-7514
Martín, Ferran|||0000-0002-1494-9167
author_role author
author2 Vélez, Paris|||0000-0001-6502-5987
Su, Lijuan|||0000-0002-4753-9340
Canalias, Xavier|||0009-0002-6473-7514
Martín, Ferran|||0000-0002-1494-9167
author2_role author
author
author
author
dc.subject.none.fl_str_mv Resonators
Sensitivity
Couplings
Permittivity
Microstrip
Table lookup
Microstrip resonators
Integrated circuit modeling
Sensors
Phase measurement
Microfluidics
topic Resonators
Sensitivity
Couplings
Permittivity
Microstrip
Table lookup
Microstrip resonators
Integrated circuit modeling
Sensors
Phase measurement
Microfluidics
description This letter presents a highly sensitive reflective-mode phase-variation permittivity sensor implemented by means of a pair of weakly coupled dumbbell defect-ground-structure (DB-DGS) resonators, the sensing elements, excited by a microstrip line. Weak magnetic coupling between the DB-DGS sensing resonators generates two closely spaced resonances, the separation of which can be adjusted by the coupling level. Since the phase of the reflection coefficient experiences an excursion of 360° between such frequencies, the phase slope can be made arbitrarily high. Thus, by tuning the device within that frequency range, the phase response of the sensor is highly sensitive to variations in the dielectric constant of any material surrounding the DB-DGS resonators, e.g., a liquid under test (LUT). This configuration, with the sensing elements etched in the ground plane, avoids any interference between the driving line and the LUT, or any mechanical accessory required for operation, thereby enhancing the sensor's practical application. Specifically designed for detecting small concentration changes in mixtures of water and isopropanol, the sensor achieves a peak sensitivity of 293°/% and a resolution of less than 0.1% with the presented setup.
publishDate 2024
dc.date.none.fl_str_mv 2
2024-01-01
2024
2024-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/308658
https://dx.doi.org/urn:doi:10.1109/LMWT.2024.3475210
url https://ddd.uab.cat/record/308658
https://dx.doi.org/urn:doi:10.1109/LMWT.2024.3475210
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2022-139181OB-I00
Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2021/SGR-00192
Ministerio de Ciencia, Innovación y Universidades https://doi.org/10.13039/100014440 FPU20/05700
Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 PREP2022-000364
Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 RYC2022-035819-I
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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