Reconfigurable and optically transparent microwave absorbers based on deep eutectic solvent-gated graphene

Abstract Electrolytically tunable graphene “building blocks” for reconfigurable and optically transparent microwave surfaces and absorbers have been designed and fabricated by exploiting Deep Eutectic Solvents (DESs). DESs have been first explored as electrolytic and environmentally friendly media f...

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Autores principales:	Marco Grande, Giuseppe Valerio Bianco, Filippo Maria Perna, Vito Capriati, Pio Capezzuto, Michael Scalora, Giovanni Bruno, Antonella D’Orazio
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f0ce391544794223a4987435a8a3485a
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spelling	oai:doaj.org-article:f0ce391544794223a4987435a8a3485a2021-12-02T15:09:14ZReconfigurable and optically transparent microwave absorbers based on deep eutectic solvent-gated graphene10.1038/s41598-019-41806-w2045-2322https://doaj.org/article/f0ce391544794223a4987435a8a3485a2019-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-41806-whttps://doaj.org/toc/2045-2322Abstract Electrolytically tunable graphene “building blocks” for reconfigurable and optically transparent microwave surfaces and absorbers have been designed and fabricated by exploiting Deep Eutectic Solvents (DESs). DESs have been first explored as electrolytic and environmentally friendly media for tuning sheet resistance and Fermi level of graphene together with its microwave response (reflection, transmission and absorption). We consider the tunability of the reconfigurable surfaces in terms of transmittance, absorption and reflectance, respectively, over the X and Ku bands when the gate voltage is varied in the −1.4/+1.4 V range. The numerical simulations and experimental measurements also show the ability of the absorber, in the Salisbury screen configuration, to achieve near perfect absorption with a modulation of about 20%. These results could find applications in several technological fields, ranging from electromagnetic pollution to integrated multi-physical regulation systems, thereby helping the advance of the performance of microwave cloaking systems, stealth windows, frequency selective surfaces, modulators and polarizers.Marco GrandeGiuseppe Valerio BiancoFilippo Maria PernaVito CapriatiPio CapezzutoMichael ScaloraGiovanni BrunoAntonella D’OrazioNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-9 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Marco Grande Giuseppe Valerio Bianco Filippo Maria Perna Vito Capriati Pio Capezzuto Michael Scalora Giovanni Bruno Antonella D’Orazio Reconfigurable and optically transparent microwave absorbers based on deep eutectic solvent-gated graphene
description	Abstract Electrolytically tunable graphene “building blocks” for reconfigurable and optically transparent microwave surfaces and absorbers have been designed and fabricated by exploiting Deep Eutectic Solvents (DESs). DESs have been first explored as electrolytic and environmentally friendly media for tuning sheet resistance and Fermi level of graphene together with its microwave response (reflection, transmission and absorption). We consider the tunability of the reconfigurable surfaces in terms of transmittance, absorption and reflectance, respectively, over the X and Ku bands when the gate voltage is varied in the −1.4/+1.4 V range. The numerical simulations and experimental measurements also show the ability of the absorber, in the Salisbury screen configuration, to achieve near perfect absorption with a modulation of about 20%. These results could find applications in several technological fields, ranging from electromagnetic pollution to integrated multi-physical regulation systems, thereby helping the advance of the performance of microwave cloaking systems, stealth windows, frequency selective surfaces, modulators and polarizers.
format	article
author	Marco Grande Giuseppe Valerio Bianco Filippo Maria Perna Vito Capriati Pio Capezzuto Michael Scalora Giovanni Bruno Antonella D’Orazio
author_facet	Marco Grande Giuseppe Valerio Bianco Filippo Maria Perna Vito Capriati Pio Capezzuto Michael Scalora Giovanni Bruno Antonella D’Orazio
author_sort	Marco Grande
title	Reconfigurable and optically transparent microwave absorbers based on deep eutectic solvent-gated graphene
title_short	Reconfigurable and optically transparent microwave absorbers based on deep eutectic solvent-gated graphene
title_full	Reconfigurable and optically transparent microwave absorbers based on deep eutectic solvent-gated graphene
title_fullStr	Reconfigurable and optically transparent microwave absorbers based on deep eutectic solvent-gated graphene
title_full_unstemmed	Reconfigurable and optically transparent microwave absorbers based on deep eutectic solvent-gated graphene
title_sort	reconfigurable and optically transparent microwave absorbers based on deep eutectic solvent-gated graphene
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/f0ce391544794223a4987435a8a3485a
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Reconfigurable and optically transparent microwave absorbers based on deep eutectic solvent-gated graphene

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