Huygens metasurface supporting quasi-bound states in the continuum for terahertz gas sensing

[EN] We investigate a terahertz (THz) gas sensing platform based on all-dielectric metasurfaces that support quasi-bound states in the continuum (quasi-BIC) with both electric and magnetic dipole resonances. The structure is designed to achieve the first Kerker condition, minimizing backscattering a...

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Autores: Alvarez-Sanchis, Jose Antonio|||0000-0002-5015-5401, Vidal, Borja|||0000-0002-0942-3259, Diaz Rubio, Ana|||0000-0002-0115-1834
Formato: artículo
Fecha de publicación:2025
País:España
Recursos:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:dnet:riunet______::ad56931a5e42a8a03593640e78b5907c
Acesso em linha:https://riunet.upv.es/handle/10251/235505
Access Level:acceso abierto
Palavra-chave:Metamaterials
Optical sensors
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spelling Huygens metasurface supporting quasi-bound states in the continuum for terahertz gas sensingAlvarez-Sanchis, Jose Antonio|||0000-0002-5015-5401Vidal, Borja|||0000-0002-0942-3259Diaz Rubio, Ana|||0000-0002-0115-1834MetamaterialsOptical sensors[EN] We investigate a terahertz (THz) gas sensing platform based on all-dielectric metasurfaces that support quasi-bound states in the continuum (quasi-BIC) with both electric and magnetic dipole resonances. The structure is designed to achieve the first Kerker condition, minimizing backscattering and maximizing light-matter interaction, which significantly enhances the sensitivity of the sensor. By optimizing structural parameters, this metasurface selectively resonates at characteristic absorption frequencies of target gases, facilitating detection even at low concentrations. We validate the approach using two gases with strong but distinct THz absorption profiles: hydrogen cyanide and sulfur dioxide (\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {SO}_2$$\end{document}). Furthermore, the free-standing design maximizes gas interaction on both sides of the metasurface, eliminating substrate-induced losses and enabling a reduced physical footprint. Our findings indicate that this metasurface outperforms standard THz sensing approaches in terms of compactness and sensitivity per path length unit, obtaining the same detection threshold as sensing in free space with a path length between 2 and 3 orders of magnitude shorter, underscoring its potential for industrial applications where the available space for sensing can be limited.This work was supported in part by the Ministerio de Ciencia e Innovacion -Agencia Estatal de Investigacion under Project PID2019-111339GBI00 and TED2021-132259B-I00. Action co-financed by the European Union through the European Regional Development Fund (ERDF) operational program for the Valencian Community 2014-2020.Nature Publishing GroupEscuela Técnica Superior de Ingeniería de TelecomunicaciónDepartamento de ComunicacionesInstituto Universitario de Tecnología NanofotónicaEscuela Politécnica Superior de GandiaAGENCIA ESTATAL DE INVESTIGACIONEuropean Regional Development FundRepositorio Institucional de la Universitat Politècnica de València Riunet20252025-04-25journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://riunet.upv.es/handle/10251/235505reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2019-111339GB-I00 ENSANCHANDO LOS LIMITES DEL CONTROL DE CALIDAD CON THZAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 TED2021-132259B-I00 DESARROLLO DE NUEVOS SENSORES BASADOS EN METASUPERFICIES DE THZ PARA LA DIGITALIZACION DE LA INDUSTRIA DE ADITIVACION DE PLASTICOSopen accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento (by)http://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:dnet:riunet______::ad56931a5e42a8a03593640e78b5907c2026-06-13T07:49:27Z
dc.title.none.fl_str_mv Huygens metasurface supporting quasi-bound states in the continuum for terahertz gas sensing
title Huygens metasurface supporting quasi-bound states in the continuum for terahertz gas sensing
spellingShingle Huygens metasurface supporting quasi-bound states in the continuum for terahertz gas sensing
Alvarez-Sanchis, Jose Antonio|||0000-0002-5015-5401
Metamaterials
Optical sensors
title_short Huygens metasurface supporting quasi-bound states in the continuum for terahertz gas sensing
title_full Huygens metasurface supporting quasi-bound states in the continuum for terahertz gas sensing
title_fullStr Huygens metasurface supporting quasi-bound states in the continuum for terahertz gas sensing
title_full_unstemmed Huygens metasurface supporting quasi-bound states in the continuum for terahertz gas sensing
title_sort Huygens metasurface supporting quasi-bound states in the continuum for terahertz gas sensing
dc.creator.none.fl_str_mv Alvarez-Sanchis, Jose Antonio|||0000-0002-5015-5401
Vidal, Borja|||0000-0002-0942-3259
Diaz Rubio, Ana|||0000-0002-0115-1834
author Alvarez-Sanchis, Jose Antonio|||0000-0002-5015-5401
author_facet Alvarez-Sanchis, Jose Antonio|||0000-0002-5015-5401
Vidal, Borja|||0000-0002-0942-3259
Diaz Rubio, Ana|||0000-0002-0115-1834
author_role author
author2 Vidal, Borja|||0000-0002-0942-3259
Diaz Rubio, Ana|||0000-0002-0115-1834
author2_role author
author
dc.contributor.none.fl_str_mv Escuela Técnica Superior de Ingeniería de Telecomunicación
Departamento de Comunicaciones
Instituto Universitario de Tecnología Nanofotónica
Escuela Politécnica Superior de Gandia
AGENCIA ESTATAL DE INVESTIGACION
European Regional Development Fund
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Metamaterials
Optical sensors
topic Metamaterials
Optical sensors
description [EN] We investigate a terahertz (THz) gas sensing platform based on all-dielectric metasurfaces that support quasi-bound states in the continuum (quasi-BIC) with both electric and magnetic dipole resonances. The structure is designed to achieve the first Kerker condition, minimizing backscattering and maximizing light-matter interaction, which significantly enhances the sensitivity of the sensor. By optimizing structural parameters, this metasurface selectively resonates at characteristic absorption frequencies of target gases, facilitating detection even at low concentrations. We validate the approach using two gases with strong but distinct THz absorption profiles: hydrogen cyanide and sulfur dioxide (\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {SO}_2$$\end{document}). Furthermore, the free-standing design maximizes gas interaction on both sides of the metasurface, eliminating substrate-induced losses and enabling a reduced physical footprint. Our findings indicate that this metasurface outperforms standard THz sensing approaches in terms of compactness and sensitivity per path length unit, obtaining the same detection threshold as sensing in free space with a path length between 2 and 3 orders of magnitude shorter, underscoring its potential for industrial applications where the available space for sensing can be limited.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-04-25
dc.type.none.fl_str_mv journal 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://riunet.upv.es/handle/10251/235505
url https://riunet.upv.es/handle/10251/235505
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 http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 PID2019-111339GB-I00 ENSANCHANDO LOS LIMITES DEL CONTROL DE CALIDAD CON THZ
Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 TED2021-132259B-I00 DESARROLLO DE NUEVOS SENSORES BASADOS EN METASUPERFICIES DE THZ PARA LA DIGITALIZACION DE LA INDUSTRIA DE ADITIVACION DE PLASTICOS
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento (by)
http://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
Reconocimiento (by)
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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