Extending the bandwidth of electromagnetic cloaks

被引：124

作者：

Chen, Huanyang ^{[1
,2
]}

Liang, Zixian ^{[3
]}

Yao, Peijun ^{[3
]}

Jiang, Xunya ^{[1
,3
]}

Ma, Hongru ^{[2
]}

Chan, C. T. ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Phys, Kowlong, Hong Kong, Peoples R China

[2] Shanghai Jiao Tong Univ, Inst Theoret Phys, Shanghai 200240, Peoples R China

[3] Chinese Acad Sci, Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China

来源：

PHYSICAL REVIEW B | 2007年 / 76卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.76.241104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using the idea of a transformation medium, a cloak can be designed to make a domain invisible to one target frequency. We examine the possibility of extending the bandwidth of such a cloak. We find that causality requirements impose severe constraints on the system parameters of the transformation medium, and we show that a specific form of "reduction" can help us to create a cloak that offers a reduced cross section in a finite frequency range. We also give a simple inequality that limits the bandwidth of operation.

引用

页数：4

共 20 条

[1] Achieving transparency with plasmonic and metamaterial coatings -: art. no. 016623 [J].

Alù, A ;

Engheta, N .

PHYSICAL REVIEW E, 2005, 72 (01)

[2] Plasmonic materials in transparency and cloaking problems:: mechanism, robustness, and physical insights [J].

Alu, Andrea ;

Engheta, Nader .

OPTICS EXPRESS, 2007, 15 (06) :3318-3332

[3] Optical cloaking with metamaterials [J].

Cai, Wenshan ;

Chettiar, Uday K. ;

Kildishev, Alexander V. ;

Shalaev, Vladimir M. .

NATURE PHOTONICS, 2007, 1 (04) :224-227

[4]

CHEN H, 2005, APPL PHYS LETT, V90, P41105

[5] Acoustic cloaking in three dimensions using acoustic metamaterials [J].

Chen, Huanyang ;

Chan, C. T. .

APPLIED PHYSICS LETTERS, 2007, 91 (18)

[6] Full-wave simulations of electromagnetic cloaking structures [J].

Cummer, Steven A. ;

Popa, Bogdan-Ioan ;

Schurig, David ;

Smith, David R. ;

Pendry, John .

PHYSICAL REVIEW E, 2006, 74 (03)

[7]

Greenleaf A, 2003, MATH RES LETT, V10, P685

[8] Anisotropic conductivities that cannot be detected by EIT [J].

Greenleaf, A ;

Lassas, M ;

Uhlmann, G .

PHYSIOLOGICAL MEASUREMENT, 2003, 24 (02) :413-419

[9] Electromagnetic wormholes and virtual magnetic monopoles from metamaterials [J].

Greenleaf, Allan ;

Kurylev, Yaroslav ;

Lassas, Matti ;

Uhlmann, Gunther .

PHYSICAL REVIEW LETTERS, 2007, 99 (18)

[10] Effective medium theory of left-handed materials [J].

Koschny, T ;

Kafesaki, M ;

Economou, EN ;

Soukoulis, CM .

PHYSICAL REVIEW LETTERS, 2004, 93 (10) :107402-1

← 1 2 →