Design and deposition of a metal-like and admittance-matching metamaterial as an ultra-thin perfect absorber

Abstract A stratiform metamaterial, comprising metal and dielectric thin films, exhibits both near-perfect antireflection and strong light extinction to function as a perfect and ultra-thin light absorber. The equivalent admittance and extinction coefficient of the metamaterial are tailored using a...

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Autores principales:	Yi-Jun Jen, Wei-Chih Liu, Tso-Kuei Chen, Shan-wen Lin, Yi-Ciang Jhang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2a3091769e614398b474016ab8fd01fe
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spelling	oai:doaj.org-article:2a3091769e614398b474016ab8fd01fe2021-12-02T15:06:27ZDesign and deposition of a metal-like and admittance-matching metamaterial as an ultra-thin perfect absorber10.1038/s41598-017-03392-72045-2322https://doaj.org/article/2a3091769e614398b474016ab8fd01fe2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03392-7https://doaj.org/toc/2045-2322Abstract A stratiform metamaterial, comprising metal and dielectric thin films, exhibits both near-perfect antireflection and strong light extinction to function as a perfect and ultra-thin light absorber. The equivalent admittance and extinction coefficient of the metamaterial are tailored using a visual method that is based on an admittance diagram. A five-layered metamaterial was designed and deposited with a total thickness of 260 nm on a mirror to exhibit strong and wide angle absorption over wavelengths from 400 nm to 2000 nm. A seven-layered metamaterial with a total thickness of less than 200 nm was designed and deposited to have equivalent admittance around unity and an extinction coefficient that is comparable to that of metal. Such a metal-like metamaterial exhibits low reflectivity so couples most visible light energy into the films and dissipates energy with an equivalent skin depth of less than 55 nm over visible wavelengths.Yi-Jun JenWei-Chih LiuTso-Kuei ChenShan-wen LinYi-Ciang JhangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yi-Jun Jen Wei-Chih Liu Tso-Kuei Chen Shan-wen Lin Yi-Ciang Jhang Design and deposition of a metal-like and admittance-matching metamaterial as an ultra-thin perfect absorber
description	Abstract A stratiform metamaterial, comprising metal and dielectric thin films, exhibits both near-perfect antireflection and strong light extinction to function as a perfect and ultra-thin light absorber. The equivalent admittance and extinction coefficient of the metamaterial are tailored using a visual method that is based on an admittance diagram. A five-layered metamaterial was designed and deposited with a total thickness of 260 nm on a mirror to exhibit strong and wide angle absorption over wavelengths from 400 nm to 2000 nm. A seven-layered metamaterial with a total thickness of less than 200 nm was designed and deposited to have equivalent admittance around unity and an extinction coefficient that is comparable to that of metal. Such a metal-like metamaterial exhibits low reflectivity so couples most visible light energy into the films and dissipates energy with an equivalent skin depth of less than 55 nm over visible wavelengths.
format	article
author	Yi-Jun Jen Wei-Chih Liu Tso-Kuei Chen Shan-wen Lin Yi-Ciang Jhang
author_facet	Yi-Jun Jen Wei-Chih Liu Tso-Kuei Chen Shan-wen Lin Yi-Ciang Jhang
author_sort	Yi-Jun Jen
title	Design and deposition of a metal-like and admittance-matching metamaterial as an ultra-thin perfect absorber
title_short	Design and deposition of a metal-like and admittance-matching metamaterial as an ultra-thin perfect absorber
title_full	Design and deposition of a metal-like and admittance-matching metamaterial as an ultra-thin perfect absorber
title_fullStr	Design and deposition of a metal-like and admittance-matching metamaterial as an ultra-thin perfect absorber
title_full_unstemmed	Design and deposition of a metal-like and admittance-matching metamaterial as an ultra-thin perfect absorber
title_sort	design and deposition of a metal-like and admittance-matching metamaterial as an ultra-thin perfect absorber
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/2a3091769e614398b474016ab8fd01fe
work_keys_str_mv	AT yijunjen designanddepositionofametallikeandadmittancematchingmetamaterialasanultrathinperfectabsorber AT weichihliu designanddepositionofametallikeandadmittancematchingmetamaterialasanultrathinperfectabsorber AT tsokueichen designanddepositionofametallikeandadmittancematchingmetamaterialasanultrathinperfectabsorber AT shanwenlin designanddepositionofametallikeandadmittancematchingmetamaterialasanultrathinperfectabsorber AT yiciangjhang designanddepositionofametallikeandadmittancematchingmetamaterialasanultrathinperfectabsorber
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Design and deposition of a metal-like and admittance-matching metamaterial as an ultra-thin perfect absorber

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