Fano resonances in planar silver nanosphere clusters
Fano resonances in planar silver nanosphere clusters
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DOI：
10.1007/s00339-010-5861-3
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发表时间：
2010-08-01
影响因子：
2.7
通讯作者：
Nordlander, Peter
中科院分区：
文献类型：
--
作者：
Bao, Kui;Mirin, Nikolay A.;Nordlander, Peter
用有限元方法和等离子体杂化方法研究了银纳米球团簇的等离子体性质。纳米粒子团簇表现出多个等离子体激元共振和较大的感应电磁场增强。对于对称的团簇，我们展示了如何使用群论来识别等离子体激元共振的微观性质。对于较大的团簇，我们发现它们的光谱中经常出现窄的Fano共振。
The plasmonic properties of silver nanosphere clusters are investigated using the finite element and the plasmon hybridization methods. The nanoparticle clusters are found to exhibit multiple plasmon resonances with large induced electromagnetic field enhancements. For symmetric clusters, we show how group theory can be used to identify the microscopic nature of the plasmon resonances. For larger clusters, we show that narrow Fano resonances are frequently present in their optical spectra.