Gold-Coated Nanorod Arrays as Highly Sensitive Substrates for Surface-Enhanced Raman Spectroscopy

被引：79

作者：

Fan, J. -G. ^{[1
]}

Zhao, Y. -P. ^{[1
]}

机构：

[1] Univ Georgia, Dept Phys & Astron, Nanoscale Sci & Engn Ctr, Athens, GA 30602 USA

来源：

LANGMUIR | 2008年 / 24卷 / 24期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1021/la802248t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Substrates for surface-enhanced Raman spectroscopy (SERS) have suffered from low enhancement, short shelf time, and poor uniformity or reproducibility. We report an effective method to produce SERS substrates that can potentially overcome these shortcomings. The SERS substrate consists of a layer of 100 nm Ag film deposited on a Si or glass substrate, a Si nanorod array fabricated by glancing angle deposition, and an Au coating fabricated by sputtering. The effects of the height and separation of the Si nanorods and the thickness of the Au layer on the SERS enhancement factor are investigated. Optimal substrates are capable of detecting attomolar quantities of trans-1,2-bis(4-pyridyl)ethylene.

引用

页码：14172 / 14175

页数：4

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