Mixed Dimer Double-Resonance Substrates for Surface-Enhanced Raman Spectroscopy

被引：74
作者：
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 | 2011年 / 5卷 / 01期
基金：
美国国家科学基金会;
关键词：
double-resonance SERS substrate; surface plasmon polariton; surface-enhanced Raman scattering; heterodimers; metal nanoparticles; hyper-Raman scattering; SCATTERING; NANOPARTICLES; EXCITATION;
D O I：
10.1021/nn102726j
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Surface-enhanced Raman spectroscopy is performed on pairs of gold nanoparticles, for Which the nanoparticles in each pair have different shales'. The dimers therefore exhibit two plasmon resonances. These structures, termed Mixed dimer double-resonance substrates, enable strong field enhancement at pump and Stokes frequencies in surface-enhanced Raman spectroscopy. The extinction spectra of mixed diners are measured and simulated to their plasmon resonances. The experimentally determined enhancement factors of double-resonance structures are compared to those of single-resonance substrates.
引用
收藏
页码：307 / 314
页数：8
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