Transformation-Optics Description of Nonlocal Effects in Plasmonic Nanostructures
Transformation-Optics Description of Nonlocal Effects in Plasmonic Nanostructures
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DOI：
10.1103/physrevlett.108.106802
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发表时间：
2012-03-06
影响因子：
8.6
通讯作者：
Pendry, J. B.
中科院分区：
文献类型：
--
作者：
Fernandez-Dominguez, A. I.;Wiener, A.;Pendry, J. B.
我们开发了一个有见地的变换光学方法来研究非局域性对等离子体纳米结构的光学性质的影响。利用流体力学Drude模型研究了纳米线二聚体的捕光性能，该模型揭示了先前局部计算未预测到的非局部共振。我们的方法阐明了这种纳米粒子配置中辐射和非局部效应之间的相互作用，这使我们能够阐明最大限度地提高其吸收和场增强能力的最佳尺寸。
We develop an insightful transformation-optics approach to investigate the impact that nonlocality has on the optical properties of plasmonic nanostructures. The light-harvesting performance of a dimer of touching nanowires is studied by using the hydrodynamical Drude model, which reveals nonlocal resonances not predicted by previous local calculations. Our method clarifies the interplay between radiative and nonlocal effects in this nanoparticle configuration, which enables us to elucidate the optimum size that maximizes its absorption and field enhancement capabilities.