Nanocap array of Au:Ag composite for surface-enhanced Raman scattering

	Nanocap array of Au:Ag composite for surface-enhanced Raman scattering
	Zhang, Y. J.; C. Wang; J. P. Wang; L. Chen; J. Li; Y. Liu; X. Y. Zhao; Y. X. Wang and J. H. Yang
	2016
发表期刊	Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy
卷号	152
摘要	We fabricated Au:Ag nanocap arrays by co-sputtering Au and Ag onto two-dimensional polystyrene (PS) colloidal sphere templates in a magnetron sputtering system for the surface-enhanced Raman scattering (SERS) substrate. In contrast to the bilayer Au/Ag, the co-sputtering Au:Ag bimetal array formed the protrusion network of Ag and Au nanoparticles, which contributed to Raman enhancement in the waxberry-like structure. The metal protrusions formed waxberry-like shell in which the PS beads were encapsulated. At the same time, the Au:Ag bimetal arrays exhibit 4-fold more enhancement in the SERS signal intensity of Rhodamine 6G at the 1649 cm(-1) than Au/Ag bilayer array, which is ascribed to the plasmon coupling between the nanoparticles of Au and Ag on the sample. When the PS colloidal particle templates were etched by O-2-plasma before sputtering process, the nanogaps affected the surface plasmon resonance (SPR), and the optimal gaps between adjacent Au:Ag nanocaps generated even stronger SERS enhancements. This SERS substrate of Au:Ag showed high sensitivity and reproducibility. The EF of Au:Ag nanocap array substrate onto which Rhodamine 6G (R6G) were adsorbed was evaluated as 6.72 x 10(10). (C) 2015 Elsevier B.V. All rights reserved.
文章类型	期刊
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/181722/57452
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhang, Y. J.,C. Wang,J. P. Wang,et al. Nanocap array of Au:Ag composite for surface-enhanced Raman scattering[J]. Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,2016,152.
APA	Zhang, Y. J..,C. Wang.,J. P. Wang.,L. Chen.,J. Li.,...&Y. X. Wang and J. H. Yang.(2016).Nanocap array of Au:Ag composite for surface-enhanced Raman scattering.Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,152.
MLA	Zhang, Y. J.,et al."Nanocap array of Au:Ag composite for surface-enhanced Raman scattering".Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy 152(2016).

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