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

页码：2804 / 2810

页数：7

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