Eur. Phys. J. Appl. Phys.
Volume 44, Number 2, November 2008
|Page(s)||181 - 185|
|Section||Physics of Energy Generation, Conversion and Storage|
|Published online||21 August 2008|
Non-rotationally invariant invisibility cloaks and concentrators of EM Waves
State Key Laboratory of Millimeter Waves, Department of Radio Engineering
Southeast University, Nanjing 210096, P.R. China
2 College of Information Science and Technology Nanjing Forestry University, Nanjing 210037, P.R. China
Revised: 29 June 2008
Accepted: 22 July 2008
Published online: 21 August 2008
We present electromagnetic invisible cloaks and concentrators which are composed of inhomogeneous and anisotropic metamaterials with a square-shaped outer boundary and a circular-shaped inner boundary. Using the technique of coordinate transformation, closed-form formulations of the permittivity and permeability tensors have been derived for the metamaterials to realize the invisible cloaking and to concentrate electromagnetic waves. Full-wave simulation results are given to validate the non-rotationally invariant cloaks and concentrators.
PACS: 41.20.Jb – Electromagnetic wave propagation; radiowave propagation / 42.25.Gy – Edge and boundary effects; reflection and refraction / 42.79.Dj – Gratings
© EDP Sciences, 2008
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