Ferroelectric-assisted gold nanoparticles array for centimeter-scale highly reproducible SERS substrates

Abstract Assemble metal nanoparticles into various ordered structures with scale up to centimeter area is required to meet diverse needs of lab-on-a-chips and analytic components. Here, we present the uniform and high-yield fabrication of centimeter-scale gold nanoparticles (AuNPs) array for SERS su...

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Autores principales:	Xiaoyan Liu, Minoru Osada, Kenji Kitamura, Takahiro Nagata, Donghui Si
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6fab93c4f0b64fd395fd5bd63cb85f8a
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spelling	oai:doaj.org-article:6fab93c4f0b64fd395fd5bd63cb85f8a2021-12-02T12:31:54ZFerroelectric-assisted gold nanoparticles array for centimeter-scale highly reproducible SERS substrates10.1038/s41598-017-03301-y2045-2322https://doaj.org/article/6fab93c4f0b64fd395fd5bd63cb85f8a2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03301-yhttps://doaj.org/toc/2045-2322Abstract Assemble metal nanoparticles into various ordered structures with scale up to centimeter area is required to meet diverse needs of lab-on-a-chips and analytic components. Here, we present the uniform and high-yield fabrication of centimeter-scale gold nanoparticles (AuNPs) array for SERS substrates. Ferroelectric-assisted assembly of AuNPs line array is successfully fabricated by using a periodically poled LiNbO3 (PPLN) single crystal as a template. SNOM-Raman shows that the uniform assembly of AuNPs exhibits a high density of “hot spots” arising from strong electromagnetic (EM) field coupling induced by adjacent AuNPs. Quantitative analysis based on SERS detection describes an excellent reproducibility with an intensity variation less than 7% at 1649 cm−1 of Rhodamine 6G. SERS spectra combined with 3D-FDTD modelling indicate that the EM enhancement occurs at all three excitation wavelength of 515, 561 and 633 nm and the 561-nm-laser displays the strongest Raman enhancement with an enhancement factor in an order of 109. The corresponding experimental and theoretical results present a new strategy to fabricate large-area, highly reproducible and sensitive SERS substrates for practical applications.Xiaoyan LiuMinoru OsadaKenji KitamuraTakahiro NagataDonghui SiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xiaoyan Liu Minoru Osada Kenji Kitamura Takahiro Nagata Donghui Si Ferroelectric-assisted gold nanoparticles array for centimeter-scale highly reproducible SERS substrates
description	Abstract Assemble metal nanoparticles into various ordered structures with scale up to centimeter area is required to meet diverse needs of lab-on-a-chips and analytic components. Here, we present the uniform and high-yield fabrication of centimeter-scale gold nanoparticles (AuNPs) array for SERS substrates. Ferroelectric-assisted assembly of AuNPs line array is successfully fabricated by using a periodically poled LiNbO3 (PPLN) single crystal as a template. SNOM-Raman shows that the uniform assembly of AuNPs exhibits a high density of “hot spots” arising from strong electromagnetic (EM) field coupling induced by adjacent AuNPs. Quantitative analysis based on SERS detection describes an excellent reproducibility with an intensity variation less than 7% at 1649 cm−1 of Rhodamine 6G. SERS spectra combined with 3D-FDTD modelling indicate that the EM enhancement occurs at all three excitation wavelength of 515, 561 and 633 nm and the 561-nm-laser displays the strongest Raman enhancement with an enhancement factor in an order of 109. The corresponding experimental and theoretical results present a new strategy to fabricate large-area, highly reproducible and sensitive SERS substrates for practical applications.
format	article
author	Xiaoyan Liu Minoru Osada Kenji Kitamura Takahiro Nagata Donghui Si
author_facet	Xiaoyan Liu Minoru Osada Kenji Kitamura Takahiro Nagata Donghui Si
author_sort	Xiaoyan Liu
title	Ferroelectric-assisted gold nanoparticles array for centimeter-scale highly reproducible SERS substrates
title_short	Ferroelectric-assisted gold nanoparticles array for centimeter-scale highly reproducible SERS substrates
title_full	Ferroelectric-assisted gold nanoparticles array for centimeter-scale highly reproducible SERS substrates
title_fullStr	Ferroelectric-assisted gold nanoparticles array for centimeter-scale highly reproducible SERS substrates
title_full_unstemmed	Ferroelectric-assisted gold nanoparticles array for centimeter-scale highly reproducible SERS substrates
title_sort	ferroelectric-assisted gold nanoparticles array for centimeter-scale highly reproducible sers substrates
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/6fab93c4f0b64fd395fd5bd63cb85f8a
work_keys_str_mv	AT xiaoyanliu ferroelectricassistedgoldnanoparticlesarrayforcentimeterscalehighlyreproducibleserssubstrates AT minoruosada ferroelectricassistedgoldnanoparticlesarrayforcentimeterscalehighlyreproducibleserssubstrates AT kenjikitamura ferroelectricassistedgoldnanoparticlesarrayforcentimeterscalehighlyreproducibleserssubstrates AT takahironagata ferroelectricassistedgoldnanoparticlesarrayforcentimeterscalehighlyreproducibleserssubstrates AT donghuisi ferroelectricassistedgoldnanoparticlesarrayforcentimeterscalehighlyreproducibleserssubstrates
_version_	1718394220262195200

Ferroelectric-assisted gold nanoparticles array for centimeter-scale highly reproducible SERS substrates

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