Theory of Three-Dimensional Nanocrescent Light Harvesters

被引：37

作者：

Fernandez-Dominguez, Antonio I. ^{[1
]}

Luo, Yu ^{[1
]}

Wiener, Aeneas ^{[1
]}

Pendry, J. B. ^{[1
]}

Maier, Stefan A. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England

来源：

NANO LETTERS | 2012年 / 12卷 / 11期

基金：

英国工程与自然科学研究理事会;

关键词：

Localized surface plasmon; transformation optics; absorption cross section; field enhancement; structural bluntness; nonlocal effects; GOLD NANOSHELLS; OPTICAL-PROPERTIES; TRANSFORMATION-OPTICS; METAL NANOPARTICLES; PLASMON RESONANCES; NANOSTRUCTURES; ENHANCEMENT; SENSITIVITY; EXTINCTION; DEVICES;

D O I：

10.1021/nl303377g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The optical properties of three-dimensional crescent shaped.. gold nanoparticles are studied using a transformation optics methodology. The polarization insensitive, highly efficient, and tunable light harvesting ability of singular nanocrescents is demonstrated We extend our approach to more realistic blunt nanostructures, showing the robustness of their plasmonic performance against geometric imperfections. Finally, we provide analytical and numerical insights into the sensitivity of the device to. radiative losses and nonlocal effects. Our theoretical findings reveal an underlying relation between structural bluntness and spatial dispersion in this particular nanoparticle configuration.

引用

页码：5946 / 5953

页数：8

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