Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings

Abstract While terahertz spectroscopy can provide valuable information regarding the charge transport properties in semiconductors, its application for the characterization of low-conductive two-dimensional layers, i.e., σs < < 1 mS, remains elusive. This is primarily due to the low sensitivi...

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Autores principales:	Prashanth Gopalan, Yunshan Wang, Berardi Sensale-Rodriguez
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a4589a3ccd4441cdb73ecf0f82003403
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spelling	oai:doaj.org-article:a4589a3ccd4441cdb73ecf0f820034032021-12-02T10:44:15ZTerahertz characterization of two-dimensional low-conductive layers enabled by metal gratings10.1038/s41598-021-82560-22045-2322https://doaj.org/article/a4589a3ccd4441cdb73ecf0f820034032021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82560-2https://doaj.org/toc/2045-2322Abstract While terahertz spectroscopy can provide valuable information regarding the charge transport properties in semiconductors, its application for the characterization of low-conductive two-dimensional layers, i.e., σs < < 1 mS, remains elusive. This is primarily due to the low sensitivity of direct transmission measurements to such small sheet conductivity levels. In this work, we discuss harnessing the extraordinary optical transmission through gratings consisting of metallic stripes to characterize such low-conductive two-dimensional layers. We analyze the geometric tradeoffs in these structures and provide physical insights, ultimately leading to general design guidelines for experiments enabling non-contact, non-destructive, highly sensitive characterization of such layers.Prashanth GopalanYunshan WangBerardi Sensale-RodriguezNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Prashanth Gopalan Yunshan Wang Berardi Sensale-Rodriguez Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings
description	Abstract While terahertz spectroscopy can provide valuable information regarding the charge transport properties in semiconductors, its application for the characterization of low-conductive two-dimensional layers, i.e., σs < < 1 mS, remains elusive. This is primarily due to the low sensitivity of direct transmission measurements to such small sheet conductivity levels. In this work, we discuss harnessing the extraordinary optical transmission through gratings consisting of metallic stripes to characterize such low-conductive two-dimensional layers. We analyze the geometric tradeoffs in these structures and provide physical insights, ultimately leading to general design guidelines for experiments enabling non-contact, non-destructive, highly sensitive characterization of such layers.
format	article
author	Prashanth Gopalan Yunshan Wang Berardi Sensale-Rodriguez
author_facet	Prashanth Gopalan Yunshan Wang Berardi Sensale-Rodriguez
author_sort	Prashanth Gopalan
title	Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings
title_short	Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings
title_full	Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings
title_fullStr	Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings
title_full_unstemmed	Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings
title_sort	terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/a4589a3ccd4441cdb73ecf0f82003403
work_keys_str_mv	AT prashanthgopalan terahertzcharacterizationoftwodimensionallowconductivelayersenabledbymetalgratings AT yunshanwang terahertzcharacterizationoftwodimensionallowconductivelayersenabledbymetalgratings AT berardisensalerodriguez terahertzcharacterizationoftwodimensionallowconductivelayersenabledbymetalgratings
_version_	1718396781822214144

Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings

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