Transition from Isolated to Collective Modes in Plasmonic Oligomers
Transition from Isolated to Collective Modes in Plasmonic Oligomers
复制标题
等离子低聚物中从孤立模式到集合模式的转变
DOI：
10.1021/nl101938p
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发表时间：
2010-07-01
期刊：
影响因子：
10.8
通讯作者：
Liu, Na
中科院分区：
文献类型：
--
作者：
Hentschel, Mario;Saliba, Michael;Liu, Na
我们证明了从孤立的集体光学模式的等离子体低聚物的过渡。具体地说，我们研究了随着颗粒间间隙分离逐渐减小的平面等离子体六聚体和七聚体的共振行为。对于小于60 nm的分离，在等离子体七聚体中观察到明显的Fano共振。
We demonstrate the transition from isolated to collective optical modes in plasmonic oligomers. Specifically, we investigate the resonant behavior of planar plasmonic hexamers and heptamers with gradually decreasing the interparticle gap separation A pronounced Fano resonance is observed in the plasmonic heptamer for separations smaller than 60 nm The spectral characteristics change drastically upon removal of the central nanoparticle Our work paves the road toward complex hierarchical plasmonic oligmers with tailored optical properties