Nanoscale spectroscopy with optical antennas

被引：43
作者：
Bharadwaj, Palash [1 ]
Beams, Ryan [1 ]
Novotny, Lukas [1 ]
机构：
[1] Univ Rochester, Inst Opt, Rochester, NY 14627 USA
来源：
CHEMICAL SCIENCE | 2011年 / 2卷 / 01期
基金：
美国国家科学基金会;
关键词：
ENHANCED RAMAN-SCATTERING; NANOPARTICLES; MOLECULES;
D O I：
10.1039/c0sc00440e
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Optical antennas made of gold nanoparticles are used to enhance the spectroscopic response of single molecules. With a scannable optical half-wave antenna in the form of a gold nanorod we achieve a spatial resolution of 20nm in fluorescence imaging. We explore simultaneous fluorescence and Raman enhancement of dye molecules in the junction of two gold nanoparticles and find similar enhancements as a function of interparticle distance for both fluorescence and Raman scattering. We compare our results with theoretical predictions and provide possible explanations.
引用
收藏
页码：136 / 140
页数：5
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