Plasmon resonances of a gold nanostar
Plasmon resonances of a gold nanostar
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DOI：
10.1021/nl062969c
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发表时间：
2007-03-01
期刊：
影响因子：
10.8
通讯作者：
Nordlander, Peter
中科院分区：
文献类型：
--
作者：
Hao, Feng;Nehl, Colleen L.;Nordlander, Peter
利用时域有限差分方法，我们表明，等离子体的纳米星的结果从杂交的等离子体的核心和尖端的纳米粒子。nanostar核心作为一个纳米天线，大大增加了激发截面和尖端等离子体激元的电磁场增强。我们的分析表明，等离子体杂交图片可以结合数值方法来解释高度复杂的纳米结构的等离子体的物理起源。
Using the finite-difference time-domain method, we show that the plasmons of a nanostar result from hybridization of plasmons of the core and tips of the nanoparticle. The nanostar core serves as a nanoscale antenna, dramatically increasing the excitation cross section and the electromagnetic field enhancements of the tip plasmons. Our analysis demonstrates that the plasmon hybridization picture can be combined with numerical approaches to interpret the physical origin of the plasmons of highly complex nanostructures.