Double-Resonance Plasmon Substrates for Surface-Enhanced Raman Scattering with Enhancement at Excitation and Stokes Frequencies

被引：256
|
作者：
Chu, Yizhuo [1 ]
Banaee, Mohamad G. [1 ]
Crozier, Kenneth B. [1 ]
机构：
[1] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA
来源：
ACS NANO | 2010年 / 4卷 / 05期
基金：
美国国家科学基金会;
关键词：
localized surface plasmon; surface plasmon polariton; nanoparticle; surface enhanced Raman scattering; spatial distribution; hybridization;
D O I：
10.1021/nn901826q
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We report a surface-enhanced Raman scattering (SERS) substrate with plasmon resonances at both excitation and Stokes frequencies. This multilayer structure combines localized surface plasmons on the nanoparticles with surface plasmon polaritons excited on a gold film. The largest SERS enhancement factor for a gold device is measured to be 7.2 x 10(7), which is more than 2 orders of magnitude larger than that measured on a gold nanoparticle array on a glass substrate. The largest SERS enhancement for a silver device is measured to be 8.4 x 10(8).
引用
收藏
页码：2804 / 2810
页数：7
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