Achieving broad absorption band and high incident angles by stochastically-distributed oblique-flat-sheet metamaterial perfect absorbers

Abstract In this work, we integrated a periodic seed layer and oblique deposition method to fabricate a stochastically-distributed oblique-flat-sheet metamaterial perfect absorber (MPA). Such design could increase its absorption bandwidth and tolerance to high angle-incidence due to the fact that va...

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Autores principales:	Cheng-Yu Lu, Chin-Chien Chung, Ta-Jen Yen, Tsung-Yu Huang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2934a7d748e84c74928b5f9faa964921
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spelling	oai:doaj.org-article:2934a7d748e84c74928b5f9faa9649212021-12-02T18:14:08ZAchieving broad absorption band and high incident angles by stochastically-distributed oblique-flat-sheet metamaterial perfect absorbers10.1038/s41598-021-98077-72045-2322https://doaj.org/article/2934a7d748e84c74928b5f9faa9649212021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98077-7https://doaj.org/toc/2045-2322Abstract In this work, we integrated a periodic seed layer and oblique deposition method to fabricate a stochastically-distributed oblique-flat-sheet metamaterial perfect absorber (MPA). Such design could increase its absorption bandwidth and tolerance to high angle-incidence due to the fact that various oblique flat sheets offer different resonance conditions while even a single oblique flat sheet could provide different optical paths for resonance. On the other hand, a seed layer could reduce uncertainty regarding to direct oblique deposition and provide abilities to manipulate the bandwidth of the MPA. We also setup a simulation model in the aids of Visual Basic Application and examined the absorption behavior of the MPA under TM and TE oblique incidence that could achieve high absorbance under 80° and 60° incidence, respectively. Finally, in measurement, the fabricated sample owns 65% absorbance within 80–250 THz and over 90% absorbance within 250–320 THz at x-polarization normal incidence; as for the y-polarization normal incidence, we could achieve overall 70% absorbance within 80–300 THz. The measured results reveal similar tendency compared to the simulated ones.Cheng-Yu LuChin-Chien ChungTa-Jen YenTsung-Yu HuangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Cheng-Yu Lu Chin-Chien Chung Ta-Jen Yen Tsung-Yu Huang Achieving broad absorption band and high incident angles by stochastically-distributed oblique-flat-sheet metamaterial perfect absorbers
description	Abstract In this work, we integrated a periodic seed layer and oblique deposition method to fabricate a stochastically-distributed oblique-flat-sheet metamaterial perfect absorber (MPA). Such design could increase its absorption bandwidth and tolerance to high angle-incidence due to the fact that various oblique flat sheets offer different resonance conditions while even a single oblique flat sheet could provide different optical paths for resonance. On the other hand, a seed layer could reduce uncertainty regarding to direct oblique deposition and provide abilities to manipulate the bandwidth of the MPA. We also setup a simulation model in the aids of Visual Basic Application and examined the absorption behavior of the MPA under TM and TE oblique incidence that could achieve high absorbance under 80° and 60° incidence, respectively. Finally, in measurement, the fabricated sample owns 65% absorbance within 80–250 THz and over 90% absorbance within 250–320 THz at x-polarization normal incidence; as for the y-polarization normal incidence, we could achieve overall 70% absorbance within 80–300 THz. The measured results reveal similar tendency compared to the simulated ones.
format	article
author	Cheng-Yu Lu Chin-Chien Chung Ta-Jen Yen Tsung-Yu Huang
author_facet	Cheng-Yu Lu Chin-Chien Chung Ta-Jen Yen Tsung-Yu Huang
author_sort	Cheng-Yu Lu
title	Achieving broad absorption band and high incident angles by stochastically-distributed oblique-flat-sheet metamaterial perfect absorbers
title_short	Achieving broad absorption band and high incident angles by stochastically-distributed oblique-flat-sheet metamaterial perfect absorbers
title_full	Achieving broad absorption band and high incident angles by stochastically-distributed oblique-flat-sheet metamaterial perfect absorbers
title_fullStr	Achieving broad absorption band and high incident angles by stochastically-distributed oblique-flat-sheet metamaterial perfect absorbers
title_full_unstemmed	Achieving broad absorption band and high incident angles by stochastically-distributed oblique-flat-sheet metamaterial perfect absorbers
title_sort	achieving broad absorption band and high incident angles by stochastically-distributed oblique-flat-sheet metamaterial perfect absorbers
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/2934a7d748e84c74928b5f9faa964921
work_keys_str_mv	AT chengyulu achievingbroadabsorptionbandandhighincidentanglesbystochasticallydistributedobliqueflatsheetmetamaterialperfectabsorbers AT chinchienchung achievingbroadabsorptionbandandhighincidentanglesbystochasticallydistributedobliqueflatsheetmetamaterialperfectabsorbers AT tajenyen achievingbroadabsorptionbandandhighincidentanglesbystochasticallydistributedobliqueflatsheetmetamaterialperfectabsorbers AT tsungyuhuang achievingbroadabsorptionbandandhighincidentanglesbystochasticallydistributedobliqueflatsheetmetamaterialperfectabsorbers
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Achieving broad absorption band and high incident angles by stochastically-distributed oblique-flat-sheet metamaterial perfect absorbers

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