Ordered Nanocap Array Composed of SiO2-Isolated Ag Islands as SERS Platform

	Ordered Nanocap Array Composed of SiO2-Isolated Ag Islands as SERS Platform
	Wang Y. X.; Zhao X. Y.; Chen L.; Chen S.; Wei M. B.; Gao M.; Zhao Y.; Wang C.; Qu X.; Zhang Y. J.; Yang J. H.
	2014
发表期刊	Langmuir
ISSN	ISBN/0743-7463
卷号	30 期号:50 页码:15285-15291
摘要	SERS-active substrate is fabricated by cosputtering Ag and SiO2 onto two-dimensional polystyrene (PS) colloidal particle templates in a magnetron sputtering system. When Ag and SiO2 are cosputtered onto ordered PS templates, the SiO2-isolated Ag island (SiO2-Ag) nanocap arrays with nanogaps and nanoscaled surface roughness form on PS particles, in which "hot spots" are facilely engineered on three-dimensional nanostructures. The surface-enhanced Raman scattering (SERS) activities of the SiO2-Ag nanocap arrays vary nonmonotonically and depend on the film thickness and surface roughness strongly. Under the optimized conditions, the SERS signal intensity of 4-aminothiophenol (PATP) is employed to evaluate the SERS ability (4.41 x 10(5)). The addition of SiO2 not only avoids photobleaching and background fluorescence but also decreases the oxidation rate of Ag and increases the stability of Ag particles. The results demonstrate the potential applications of this technique in reproducible SERS substrate.
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/44248
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Wang Y. X.,Zhao X. Y.,Chen L.,et al. Ordered Nanocap Array Composed of SiO2-Isolated Ag Islands as SERS Platform[J]. Langmuir,2014,30(50):15285-15291.
APA	Wang Y. X..,Zhao X. Y..,Chen L..,Chen S..,Wei M. B..,...&Yang J. H..(2014).Ordered Nanocap Array Composed of SiO2-Isolated Ag Islands as SERS Platform.Langmuir,30(50),15285-15291.
MLA	Wang Y. X.,et al."Ordered Nanocap Array Composed of SiO2-Isolated Ag Islands as SERS Platform".Langmuir 30.50(2014):15285-15291.

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