Experimental demonstration of deeply subwavelength dielectric sensing with epsilon-near-zero (ENZ) waveguides

Beruete Díaz, Miguel; Engheta, Nader; Pacheco-Peña, Víctor

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Experimental demonstration of deeply subwavelength dielectric sensing with epsilon-near-zero (ENZ) waveguides

dc.contributor.author	Beruete Díaz, Miguel
dc.contributor.author	Engheta, Nader
dc.contributor.author	Pacheco-Peña, Víctor
dc.contributor.department	Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren	eu
dc.contributor.department	Institute of Smart Cities - ISC	en
dc.contributor.department	Ingeniería Eléctrica, Electrónica y de Comunicación	es_ES
dc.date.accessioned	2022-02-23T15:12:34Z
dc.date.available	2022-02-23T15:12:34Z
dc.date.issued	2022
dc.description.abstract	In this Letter, an all metallic sensor based on ε-near-zero (ENZ) metamaterials is studied both numerically and experimentally when working at microwave frequencies. To emulate an ENZ medium, a sensor is made by using a narrow hollow rectangular waveguide, working near the cutoff frequency of its fundamental TE 10 mode. The performance of the sensor is systematically evaluated by placing subwavelength dielectric analytes (with different sizes and relative permittivities) within the ENZ waveguide and moving them along the propagation and transversal axes. It is experimentally demonstrated how this ENZ sensor is able to detect deeply subwavelength dielectric bodies of sizes up to 0.04λ and height 5 × 10 −3 λ with high sensitivities (and the figure of merit) up to 0.05 1/RIU (∼0.6 1/GHz) and 0.6 1/RIU when considering the sensor working as a frequency- or amplitude-shift-based device, respectively.	en
dc.description.sponsorship	This work was supported by MCIN/AEI/10.13039/ 501100011033/FEDER ‘Una manera de hacer Europa’ via Project No. RTI2018-094475-B-I00. V.P.-P	en
dc.format.extent	7 p.
dc.format.mimetype	application/pdf	en
dc.identifier.issn	0003-6951
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/42278
dc.language.iso	eng	en
dc.publisher	American Institute of Physics	en
dc.relation.ispartof	Applied Physics Letters,120, 081106 (2022)	en
dc.relation.projectID	info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-094475-B-I00/ES/	en
dc.rights	© 2022 Author(s). Creative Commons Attribution	en
dc.rights.accessRights	Acceso abierto / Sarbide irekia	es
dc.rights.accessRights	info:eu-repo/semantics/openAccess	en
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/
dc.subject	Epsilon-near-zero	en
dc.subject	Metamaterials	en
dc.subject	Sensing	en
dc.subject	Subwavelength sensing	en
dc.title	Experimental demonstration of deeply subwavelength dielectric sensing with epsilon-near-zero (ENZ) waveguides	en
dc.type	Artículo / Artikulua	es
dc.type	info:eu-repo/semantics/article	en
dc.type.version	Versión publicada / Argitaratu den bertsioa	es
dspace.entity.type	Publication
relation.isAuthorOfPublication	6853cbd8-0a88-42ab-b165-c51b99cb6353
relation.isAuthorOfPublication	7f0a4bcb-4ee3-4161-b562-8b0e0bfddd52
relation.isAuthorOfPublication.latestForDiscovery	6853cbd8-0a88-42ab-b165-c51b99cb6353

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