Gold-rich ligament nanostructure by dealloying Au-based metallic glass ribbon for surface-enhanced Raman scattering

Abstract A new method to fabricate an Au-rich interconnected ligament substrate by dealloying the Au-based metallic glass ribbon for surface-enhanced Raman scattering (SERS) applications was investigated in this study. Specifically, three substrates, Au film, Au-based metallic glass ribbon, and deal...

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Autores principales:	Bo-Kai Chao, Yi Xu, Hsin-Chia Ho, Pakman Yiu, Yi-Chen Lai, Chan-Hung Shek, Chun-Hway Hsueh
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1a3d1bf09c094c8d89a26d6a8584be01
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spelling	oai:doaj.org-article:1a3d1bf09c094c8d89a26d6a8584be012021-12-02T16:06:57ZGold-rich ligament nanostructure by dealloying Au-based metallic glass ribbon for surface-enhanced Raman scattering10.1038/s41598-017-08033-72045-2322https://doaj.org/article/1a3d1bf09c094c8d89a26d6a8584be012017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08033-7https://doaj.org/toc/2045-2322Abstract A new method to fabricate an Au-rich interconnected ligament substrate by dealloying the Au-based metallic glass ribbon for surface-enhanced Raman scattering (SERS) applications was investigated in this study. Specifically, three substrates, Au film, Au-based metallic glass ribbon, and dealloyed Au-based metallic glass ribbon, were studied. The dealloyed surface showed ligament nanostructure with protruding micro-islands. Based on the field emission scanning electron microscopy, reflection and scattering measurements, the dealloyed Au-based metallic glass provided a large surface area, multiple reflections, and numerous fine interstices to produce hot spots for SERS enhancements. The SERS signal of analyte, p-aminothiophenol, in the micro-island region of dealloyed Au-based metallic glass was about 2 orders of magnitude larger than the flat Au film. Our work provides a new method to fabricate the inexpensive and high SERS enhancements substrates.Bo-Kai ChaoYi XuHsin-Chia HoPakman YiuYi-Chen LaiChan-Hung ShekChun-Hway HsuehNature 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 Bo-Kai Chao Yi Xu Hsin-Chia Ho Pakman Yiu Yi-Chen Lai Chan-Hung Shek Chun-Hway Hsueh Gold-rich ligament nanostructure by dealloying Au-based metallic glass ribbon for surface-enhanced Raman scattering
description	Abstract A new method to fabricate an Au-rich interconnected ligament substrate by dealloying the Au-based metallic glass ribbon for surface-enhanced Raman scattering (SERS) applications was investigated in this study. Specifically, three substrates, Au film, Au-based metallic glass ribbon, and dealloyed Au-based metallic glass ribbon, were studied. The dealloyed surface showed ligament nanostructure with protruding micro-islands. Based on the field emission scanning electron microscopy, reflection and scattering measurements, the dealloyed Au-based metallic glass provided a large surface area, multiple reflections, and numerous fine interstices to produce hot spots for SERS enhancements. The SERS signal of analyte, p-aminothiophenol, in the micro-island region of dealloyed Au-based metallic glass was about 2 orders of magnitude larger than the flat Au film. Our work provides a new method to fabricate the inexpensive and high SERS enhancements substrates.
format	article
author	Bo-Kai Chao Yi Xu Hsin-Chia Ho Pakman Yiu Yi-Chen Lai Chan-Hung Shek Chun-Hway Hsueh
author_facet	Bo-Kai Chao Yi Xu Hsin-Chia Ho Pakman Yiu Yi-Chen Lai Chan-Hung Shek Chun-Hway Hsueh
author_sort	Bo-Kai Chao
title	Gold-rich ligament nanostructure by dealloying Au-based metallic glass ribbon for surface-enhanced Raman scattering
title_short	Gold-rich ligament nanostructure by dealloying Au-based metallic glass ribbon for surface-enhanced Raman scattering
title_full	Gold-rich ligament nanostructure by dealloying Au-based metallic glass ribbon for surface-enhanced Raman scattering
title_fullStr	Gold-rich ligament nanostructure by dealloying Au-based metallic glass ribbon for surface-enhanced Raman scattering
title_full_unstemmed	Gold-rich ligament nanostructure by dealloying Au-based metallic glass ribbon for surface-enhanced Raman scattering
title_sort	gold-rich ligament nanostructure by dealloying au-based metallic glass ribbon for surface-enhanced raman scattering
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/1a3d1bf09c094c8d89a26d6a8584be01
work_keys_str_mv	AT bokaichao goldrichligamentnanostructurebydealloyingaubasedmetallicglassribbonforsurfaceenhancedramanscattering AT yixu goldrichligamentnanostructurebydealloyingaubasedmetallicglassribbonforsurfaceenhancedramanscattering AT hsinchiaho goldrichligamentnanostructurebydealloyingaubasedmetallicglassribbonforsurfaceenhancedramanscattering AT pakmanyiu goldrichligamentnanostructurebydealloyingaubasedmetallicglassribbonforsurfaceenhancedramanscattering AT yichenlai goldrichligamentnanostructurebydealloyingaubasedmetallicglassribbonforsurfaceenhancedramanscattering AT chanhungshek goldrichligamentnanostructurebydealloyingaubasedmetallicglassribbonforsurfaceenhancedramanscattering AT chunhwayhsueh goldrichligamentnanostructurebydealloyingaubasedmetallicglassribbonforsurfaceenhancedramanscattering
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Gold-rich ligament nanostructure by dealloying Au-based metallic glass ribbon for surface-enhanced Raman scattering

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