Localized surface plasmon resonance in deep ultraviolet region below 200 nm using a nanohemisphere on mirror structure

Abstract Localized surface plasmon resonance (LSPR) was performed in the deep ultraviolet (UVC) region with Al nanohemisphere structures fabricated by means of a simple method using a combination of vapor deposition, sputtering, and thermal annealing without top-down nanofabrication technology such...

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Autores principales:	Kohei Shimanoe, Soshi Endo, Tetsuya Matsuyama, Kenji Wada, Koichi Okamoto
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b9c6435a484249d489f9342757692e22
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spelling	oai:doaj.org-article:b9c6435a484249d489f9342757692e222021-12-02T11:35:52ZLocalized surface plasmon resonance in deep ultraviolet region below 200 nm using a nanohemisphere on mirror structure10.1038/s41598-021-84550-w2045-2322https://doaj.org/article/b9c6435a484249d489f9342757692e222021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84550-whttps://doaj.org/toc/2045-2322Abstract Localized surface plasmon resonance (LSPR) was performed in the deep ultraviolet (UVC) region with Al nanohemisphere structures fabricated by means of a simple method using a combination of vapor deposition, sputtering, and thermal annealing without top-down nanofabrication technology such as electron beam lithography. The LSPR in the UV region was obtained and tuned by the initial metal film thickness, annealing temperature, and dielectric spacer layer thickness. Moreover, we achieved a flexible tuning of the LSPR in a much deeper UVC region below 200 nm using a nanohemisphere on a mirror (NHoM) structure. NHoM is a structure in which a metal nanohemisphere is formed on a metal substrate that is interposed with an Al2O3 thin film layer. In the experimental validation, Al and Ga were used for the metal hemispheres. The LSPR spectrum of the NHoM structures was split into two peaks, and the peak intensities were enhanced and sharpened. The shorter branch of the LSPR peak appeared in the UVC region below 200 nm. Both the peak intensities and linewidth were flexibly tuned by the spacer thickness. This structure can contribute to new developments in the field of deep UV plasmonics.Kohei ShimanoeSoshi EndoTetsuya MatsuyamaKenji WadaKoichi OkamotoNature 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 Kohei Shimanoe Soshi Endo Tetsuya Matsuyama Kenji Wada Koichi Okamoto Localized surface plasmon resonance in deep ultraviolet region below 200 nm using a nanohemisphere on mirror structure
description	Abstract Localized surface plasmon resonance (LSPR) was performed in the deep ultraviolet (UVC) region with Al nanohemisphere structures fabricated by means of a simple method using a combination of vapor deposition, sputtering, and thermal annealing without top-down nanofabrication technology such as electron beam lithography. The LSPR in the UV region was obtained and tuned by the initial metal film thickness, annealing temperature, and dielectric spacer layer thickness. Moreover, we achieved a flexible tuning of the LSPR in a much deeper UVC region below 200 nm using a nanohemisphere on a mirror (NHoM) structure. NHoM is a structure in which a metal nanohemisphere is formed on a metal substrate that is interposed with an Al2O3 thin film layer. In the experimental validation, Al and Ga were used for the metal hemispheres. The LSPR spectrum of the NHoM structures was split into two peaks, and the peak intensities were enhanced and sharpened. The shorter branch of the LSPR peak appeared in the UVC region below 200 nm. Both the peak intensities and linewidth were flexibly tuned by the spacer thickness. This structure can contribute to new developments in the field of deep UV plasmonics.
format	article
author	Kohei Shimanoe Soshi Endo Tetsuya Matsuyama Kenji Wada Koichi Okamoto
author_facet	Kohei Shimanoe Soshi Endo Tetsuya Matsuyama Kenji Wada Koichi Okamoto
author_sort	Kohei Shimanoe
title	Localized surface plasmon resonance in deep ultraviolet region below 200 nm using a nanohemisphere on mirror structure
title_short	Localized surface plasmon resonance in deep ultraviolet region below 200 nm using a nanohemisphere on mirror structure
title_full	Localized surface plasmon resonance in deep ultraviolet region below 200 nm using a nanohemisphere on mirror structure
title_fullStr	Localized surface plasmon resonance in deep ultraviolet region below 200 nm using a nanohemisphere on mirror structure
title_full_unstemmed	Localized surface plasmon resonance in deep ultraviolet region below 200 nm using a nanohemisphere on mirror structure
title_sort	localized surface plasmon resonance in deep ultraviolet region below 200 nm using a nanohemisphere on mirror structure
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b9c6435a484249d489f9342757692e22
work_keys_str_mv	AT koheishimanoe localizedsurfaceplasmonresonanceindeepultravioletregionbelow200nmusingananohemisphereonmirrorstructure AT soshiendo localizedsurfaceplasmonresonanceindeepultravioletregionbelow200nmusingananohemisphereonmirrorstructure AT tetsuyamatsuyama localizedsurfaceplasmonresonanceindeepultravioletregionbelow200nmusingananohemisphereonmirrorstructure AT kenjiwada localizedsurfaceplasmonresonanceindeepultravioletregionbelow200nmusingananohemisphereonmirrorstructure AT koichiokamoto localizedsurfaceplasmonresonanceindeepultravioletregionbelow200nmusingananohemisphereonmirrorstructure
_version_	1718395842478473216

Localized surface plasmon resonance in deep ultraviolet region below 200 nm using a nanohemisphere on mirror structure

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