Invisibility cloaks for toroids

被引：21
|
作者：
You, Yu [1 ,2 ]
Kattawar, George W. [1 ,2 ]
Yang, Ping [3 ]
机构：
[1] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA
[2] Texas A&M Univ, Inst Quantum Studies, College Stn, TX 77843 USA
[3] Texas A&M Univ, Dept Atmospher Sci, College Stn, TX 77843 USA
来源：
OPTICS EXPRESS | 2009年 / 17卷 / 08期
基金：
美国国家科学基金会;
关键词：
2-DIMENSIONAL ELECTROMAGNETIC CLOAKS; DISCRETE-DIPOLE APPROXIMATION; ARBITRARY SHAPES; SCATTERING; GRAINS;
D O I：
10.1364/OE.17.006591
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The material properties of toroidal invisibility cloaks are derived based on the coordinate transformation method. The permittivity and permeability tensors for toroidal cloaks are substantially different from those for spherical cloaks, but quite similar to those for 2D cylindrical cloaks because a singularity is involved at the inner boundary in both the cases. The cloaking effect is confirmed by the electric field distribution in the vicinity of toroidal cloaks simulated from the generalized discrete-dipole approximation (DDA) method. This study extends the concept of electromagnetic cloaking of arbitrarily-shaped objects to a complex geometry. (c) 2009 Optical Society of America
引用
收藏
页码：6591 / 6599
页数：9
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