Scattering of light from graphene-coated nanoparticles of negative refractive index

被引：14

作者：

Bian, Tingting ^{[1
]}

Gao, Xingru ^{[1
]}

Yu, Shen ^{[1
]}

Jiang, Lixia ^{[1
]}

Lu, Jun ^{[1
]}

Leung, P. T. ^{[2
]}

机构：

[1] Beijing Union Univ, Inst Appl Sci, Dept Fdn Sci, Beijing 100101, Peoples R China

[2] Portland State Univ, Dept Phys, POB 751, Portland, OR 97207 USA

来源：

OPTIK | 2017年 / 136卷

关键词：

Graphene-coated nanoparticles; Lorenz-Mie scattering; Negative refraction;

D O I：

10.1016/j.ijleo.2017.02.044

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The recent study of the Lorenz-Mie scattering from a graphene-coated sphere is extended to the case when the sphere is of negative refractive index, focusing on the two intriguing phenomena observed previously for a "bare" negative index sphere of sub-wavelength sizes, namely, the non-Rayleigh behavior and the low-frequency resonances. It is observed that while the graphene coating can regulate the non-Rayleigh scattering back towards Rayleigh, manifested with its own low frequency plasmonic resonances in the IR region; the low frequency peak observed previously can be significantly suppressed with the result rather insensitive to the doping level of the graphene layer. These graphene-induced effects are clarified via a study of the Bohren-Hunt theory in the limit of small size parameters for the negative refracting sphere. (C) 2017 Elsevier GmbH. All rights reserved.

引用

页码：215 / 221

页数：7