High optical enhancement in Au/Ag alloys and porous Au using Surface-Enhanced Raman spectroscopy technique

Abstract We report high optical enhancement in Ag/Au alloys and porous gold nanostructures using Surface Enhanced Raman Spectroscopy (SERS) technique. Scanning electron microscopy investigation shows the formation of Ag/Au alloys particles during irradiation of Ag–Au bilayer deposited on FTO (SnO2:F...

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Autores principales:	C. Awada, C. Dab, M. G. Grimaldi, A. Alshoaibi, F. Ruffino
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c871b4768527476c83c6db1828a62ca9
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spelling	oai:doaj.org-article:c871b4768527476c83c6db1828a62ca92021-12-02T15:53:00ZHigh optical enhancement in Au/Ag alloys and porous Au using Surface-Enhanced Raman spectroscopy technique10.1038/s41598-021-84093-02045-2322https://doaj.org/article/c871b4768527476c83c6db1828a62ca92021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84093-0https://doaj.org/toc/2045-2322Abstract We report high optical enhancement in Ag/Au alloys and porous gold nanostructures using Surface Enhanced Raman Spectroscopy (SERS) technique. Scanning electron microscopy investigation shows the formation of Ag/Au alloys particles during irradiation of Ag–Au bilayer deposited on FTO (SnO2:F) substrate by laser fluency equal to 0.5 J/cm2 or 1.0 J/cm2 with 12 ns laser pulse duration. The dealloying process of these Au–Ag alloy particles leads to the formation of Au nanoporous particles. The obtained nanostructures were studied with SERS and revealed a promising enhancement factor in porous Au nanostructure and tunability of localized surface plasmon resonance. The highly dense strong hot spots and large specific area in porous structure of gold nanostructures is the origin of the highly enhancement factor observed experimentally and theoretically. A very good agreement between simulation and experimental results was found confirming the potential of Au/Ag alloys and particularly porous gold nanostructure in SERS application.C. AwadaC. DabM. G. GrimaldiA. AlshoaibiF. RuffinoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q C. Awada C. Dab M. G. Grimaldi A. Alshoaibi F. Ruffino High optical enhancement in Au/Ag alloys and porous Au using Surface-Enhanced Raman spectroscopy technique
description	Abstract We report high optical enhancement in Ag/Au alloys and porous gold nanostructures using Surface Enhanced Raman Spectroscopy (SERS) technique. Scanning electron microscopy investigation shows the formation of Ag/Au alloys particles during irradiation of Ag–Au bilayer deposited on FTO (SnO2:F) substrate by laser fluency equal to 0.5 J/cm2 or 1.0 J/cm2 with 12 ns laser pulse duration. The dealloying process of these Au–Ag alloy particles leads to the formation of Au nanoporous particles. The obtained nanostructures were studied with SERS and revealed a promising enhancement factor in porous Au nanostructure and tunability of localized surface plasmon resonance. The highly dense strong hot spots and large specific area in porous structure of gold nanostructures is the origin of the highly enhancement factor observed experimentally and theoretically. A very good agreement between simulation and experimental results was found confirming the potential of Au/Ag alloys and particularly porous gold nanostructure in SERS application.
format	article
author	C. Awada C. Dab M. G. Grimaldi A. Alshoaibi F. Ruffino
author_facet	C. Awada C. Dab M. G. Grimaldi A. Alshoaibi F. Ruffino
author_sort	C. Awada
title	High optical enhancement in Au/Ag alloys and porous Au using Surface-Enhanced Raman spectroscopy technique
title_short	High optical enhancement in Au/Ag alloys and porous Au using Surface-Enhanced Raman spectroscopy technique
title_full	High optical enhancement in Au/Ag alloys and porous Au using Surface-Enhanced Raman spectroscopy technique
title_fullStr	High optical enhancement in Au/Ag alloys and porous Au using Surface-Enhanced Raman spectroscopy technique
title_full_unstemmed	High optical enhancement in Au/Ag alloys and porous Au using Surface-Enhanced Raman spectroscopy technique
title_sort	high optical enhancement in au/ag alloys and porous au using surface-enhanced raman spectroscopy technique
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c871b4768527476c83c6db1828a62ca9
work_keys_str_mv	AT cawada highopticalenhancementinauagalloysandporousauusingsurfaceenhancedramanspectroscopytechnique AT cdab highopticalenhancementinauagalloysandporousauusingsurfaceenhancedramanspectroscopytechnique AT mggrimaldi highopticalenhancementinauagalloysandporousauusingsurfaceenhancedramanspectroscopytechnique AT aalshoaibi highopticalenhancementinauagalloysandporousauusingsurfaceenhancedramanspectroscopytechnique AT fruffino highopticalenhancementinauagalloysandporousauusingsurfaceenhancedramanspectroscopytechnique
_version_	1718385536838664192

High optical enhancement in Au/Ag alloys and porous Au using Surface-Enhanced Raman spectroscopy technique

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