Invisibility of a metamaterial cloak illuminated by spherical electromagnetic wave

被引：12

作者：

Meng, Fan-Yi ^{[1
]}

Liang, Ying ^{[1
]}

Wu, Qun ^{[1
]}

Li, Le-Wei ^{[2
]}

机构：

[1] Harbin Inst Technol, Sch Elect & Informat Technol, Harbin 150001, Heilongjiang, Peoples R China

[2] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 119260, Singapore

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2009年 / 95卷 / 03期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

TRANSPARENCY; FIELDS;

D O I：

10.1007/s00339-009-5092-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, the invisibility of a metamaterial cloak illuminated by spherical electromagnetic wave is analytically investigated based on the full wave Mie scattering model. It is shown that for a cloak with ideal parameters the scattered field intensity is zero, but for a cloak with a loss, only the backscattering is exactly zero. Moreover, in the loss case, the scattered field intensity increases as the loss increases, which is very different from that in the conventional stealth case, where the scattered field intensity decreases as the loss of coated material increases. In addition, it is shown that scattering cross-section of the cloak with perturbed parameters decreases as the thickness of the cloak decreases, which means that thinner cloak can exhibit more stable invisibility.

引用

页码：881 / 888

页数：8

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