Surface-plasmon-enhanced optical forces in silver nanoaggregates -: art. no. 246802
Surface-plasmon-enhanced optical forces in silver nanoaggregates -: art. no. 246802
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DOI：
10.1103/physrevlett.89.246802
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发表时间：
2002-12-09
影响因子：
8.6
通讯作者：
Käll, M
中科院分区：
文献类型：
--
作者：
Xu, HX;Käll, M
我们使用扩展的Mie理论来研究表面等离子体共振激发的小银纳米颗粒聚集体所引起的光学力。它表明，单分子可以被困在紧密间隔的纳米粒子，同时拉在一起的光学力之间的结。这些效应可以显着影响表面增强拉曼散射和相关光谱在正常的实验条件下，有助于单分子的灵敏度。
We use extended Mie theory to investigate optical forces induced by and acting on small silver nanoparticle aggregates excited at surface plasmon resonance. It is shown that single molecules can be trapped at junctions between closely spaced nanoparticles, which are simultaneously pulled together by optical forces. These effects could significantly influence surface-enhanced Raman scattering and related spectroscopies under normal experimental conditions and contribute to single-molecule sensitivity.