Far- and deep-ultraviolet surface plasmon resonance sensors working in aqueous solutions using aluminum thin films

Abstract Surface plasmon resonance (SPR) sensors detect refractive index changes on metal thin films and are frequently used in aqueous solutions as bio- and chemical-sensors. Recently, we proposed new SPR sensors using aluminum (Al) thin films that work in the far- and deep-ultraviolet (FUV-DUV, 12...

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Autores principales:	Ichiro Tanabe, Yoshito Y. Tanaka, Koji Watari, Taras Hanulia, Takeyoshi Goto, Wataru Inami, Yoshimasa Kawata, Yukihiro Ozaki
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c25d6d42ebf645418c07494f45f61cde
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spelling	oai:doaj.org-article:c25d6d42ebf645418c07494f45f61cde2021-12-02T16:08:09ZFar- and deep-ultraviolet surface plasmon resonance sensors working in aqueous solutions using aluminum thin films10.1038/s41598-017-06403-92045-2322https://doaj.org/article/c25d6d42ebf645418c07494f45f61cde2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06403-9https://doaj.org/toc/2045-2322Abstract Surface plasmon resonance (SPR) sensors detect refractive index changes on metal thin films and are frequently used in aqueous solutions as bio- and chemical-sensors. Recently, we proposed new SPR sensors using aluminum (Al) thin films that work in the far- and deep-ultraviolet (FUV-DUV, 120–300 nm) regions and investigated SPR properties by an attenuated total reflectance (ATR) based spectrometer. The FUV-DUV-SPR sensors are expected to have three advantages compared to visible-SPR sensors: higher sensitivity, material selectivity, and surface specificity. However, in this study, it was revealed that the Al thin film on a quartz prism cannot be used as the FUV-DUV-SPR sensor in water solutions. This is because its SPR wavelength shifts to the visible region owing to the presence of water. On the other hand, the SPR wavelength of the Al thin film on the sapphire prism remained in the DUV region even in water. In addition, the SPR wavelength shifted to longer wavelengths with increasing refractive index on the Al thin film. These results mean that the Al thin film on the sapphire prism can be used as the FUV-DUV-SPR sensor in solutions, which may lead to the development of novel and sophisticated SPR sensors.Ichiro TanabeYoshito Y. TanakaKoji WatariTaras HanuliaTakeyoshi GotoWataru InamiYoshimasa KawataYukihiro OzakiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ichiro Tanabe Yoshito Y. Tanaka Koji Watari Taras Hanulia Takeyoshi Goto Wataru Inami Yoshimasa Kawata Yukihiro Ozaki Far- and deep-ultraviolet surface plasmon resonance sensors working in aqueous solutions using aluminum thin films
description	Abstract Surface plasmon resonance (SPR) sensors detect refractive index changes on metal thin films and are frequently used in aqueous solutions as bio- and chemical-sensors. Recently, we proposed new SPR sensors using aluminum (Al) thin films that work in the far- and deep-ultraviolet (FUV-DUV, 120–300 nm) regions and investigated SPR properties by an attenuated total reflectance (ATR) based spectrometer. The FUV-DUV-SPR sensors are expected to have three advantages compared to visible-SPR sensors: higher sensitivity, material selectivity, and surface specificity. However, in this study, it was revealed that the Al thin film on a quartz prism cannot be used as the FUV-DUV-SPR sensor in water solutions. This is because its SPR wavelength shifts to the visible region owing to the presence of water. On the other hand, the SPR wavelength of the Al thin film on the sapphire prism remained in the DUV region even in water. In addition, the SPR wavelength shifted to longer wavelengths with increasing refractive index on the Al thin film. These results mean that the Al thin film on the sapphire prism can be used as the FUV-DUV-SPR sensor in solutions, which may lead to the development of novel and sophisticated SPR sensors.
format	article
author	Ichiro Tanabe Yoshito Y. Tanaka Koji Watari Taras Hanulia Takeyoshi Goto Wataru Inami Yoshimasa Kawata Yukihiro Ozaki
author_facet	Ichiro Tanabe Yoshito Y. Tanaka Koji Watari Taras Hanulia Takeyoshi Goto Wataru Inami Yoshimasa Kawata Yukihiro Ozaki
author_sort	Ichiro Tanabe
title	Far- and deep-ultraviolet surface plasmon resonance sensors working in aqueous solutions using aluminum thin films
title_short	Far- and deep-ultraviolet surface plasmon resonance sensors working in aqueous solutions using aluminum thin films
title_full	Far- and deep-ultraviolet surface plasmon resonance sensors working in aqueous solutions using aluminum thin films
title_fullStr	Far- and deep-ultraviolet surface plasmon resonance sensors working in aqueous solutions using aluminum thin films
title_full_unstemmed	Far- and deep-ultraviolet surface plasmon resonance sensors working in aqueous solutions using aluminum thin films
title_sort	far- and deep-ultraviolet surface plasmon resonance sensors working in aqueous solutions using aluminum thin films
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/c25d6d42ebf645418c07494f45f61cde
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Far- and deep-ultraviolet surface plasmon resonance sensors working in aqueous solutions using aluminum thin films

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