Toroidal dipole response in a multifold double-ring metamaterial

被引：110

作者：

Dong, Zheng-Gao ^{[1
,2
]}

Ni, Peigen ^{[1
]}

Zhu, Jie ^{[1
]}

Yin, Xiaobo ^{[1
]}

Zhang, X. ^{[1
,3
]}

机构：

[1] Univ Calif Berkeley, Nanoscale Sci & Engn Ctr, Berkeley, CA 94720 USA

[2] Southeast Univ, Dept Phys, Nanjing 211189, Jiangsu, Peoples R China

[3] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 12期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

ELECTROMAGNETICALLY-INDUCED TRANSPARENCY; SYMMETRY-BREAKING; SUBRADIANT; RESONANCE; MOMENTS; PHYSICS; ANALOG;

D O I：

10.1364/OE.20.013065

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The toroidal response is numerically investigated in a multifold double-ring metamaterials at the antibonding magnetic-dipole mode (i.e., antiparallel magnetic dipoles in one double-ring fold). This intriguing toroidal resonance in metamaterials is considered as a result of the magnetoelectric effect due to the broken balance of the electric near-field environment. We demonstrate that the toroidal dipole response in metamaterials can improve the quality factor of the resonance spectrum. In viewing of the design flexibility on the double-ring geometry, such toroidal metamaterials will offer advantages in application potentials of toroidal dipolar moment. (C) 2012 Optical Society of America

引用

页码：13065 / 13070

页数：6

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