Electromagnetic cloaking with canonical spiral inclusions

被引：24

作者：

Guven, K. ^{[1
]}

Saenz, E. ^{[2
]}

Gonzalo, R. ^{[2
]}

Ozbay, E. ^{[1
,3
,4
]}

Tretyakov, S. ^{[5
]}

机构：

[1] Bilkent Univ, Nanotechnol Res Ctr, TR-06800 Ankara, Turkey

[2] Univ Publ Navarra, Dept Elect & Elect Engn, E-31006 Pamplona, Spain

[3] Bilkent Univ, Dept Phys, TR-06800 Ankara, Turkey

[4] Bilkent Univ, Dept Elect & Elect Engn, TR-06800 Ankara, Turkey

[5] Helsinki Univ Technol, Dept Radio Sci & Engn, FI-02015 Helsinki, Finland

来源：

NEW JOURNAL OF PHYSICS | 2008年 / 10卷

关键词：

D O I：

10.1088/1367-2630/10/11/115037

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report an electromagnetic cloaking structure that is composed of identical canonical spiral particles. By using the Clausius-Mosotti formula, the electric and magnetic polarizabilities of a single spiral particle are related to the relative permittivity and permeability of the sparse distribution of particles. The permittivity and permeability of the distribution are, in turn, defined according to the coordinate transformation, which leads to the cloaking effect. Spirals are optimized to exhibit equal permittivity and permeability response so that the cloak consisting of these spirals will work for both transverse electric (TE) and transverse magnetic (TM) polarizations. Measurement of the cloaking device surrounding a metal cylinder inside a parallel waveguide was performed. The steady-state propagation of an electromagnetic wave was reconstructed from the amplitude and phase data, which demonstrates that the field largely restores to a free-space propagation pattern after the cloak.

引用

页数：12

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