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Phys Rev Lett. 2007 Aug 10;99(6):063903. Epub 2007 Aug 6.

Electromagnetic wave interactions with a metamaterial cloak.

Author information

  • 1The Electromagnetics Academy at Zhejiang University, Zhejiang University, Hangzhou 310058, China. chenhs@ewt.mit.edu

Erratum in

  • Phys Rev Lett. 2007 Oct 5;99(14):149901.

Abstract

We establish analytically the interactions of electromagnetic wave with a general class of spherical cloaks based on a full wave Mie scattering model. We show that for an ideal cloak the total scattering cross section is absolutely zero, but for a cloak with a specific type of loss, only the backscattering is exactly zero, which indicates the cloak can still be rendered invisible with a monostatic (transmitter and receiver in the same location) detection. Furthermore, we show that for a cloak with imperfect parameters the bistatic (transmitter and receiver in different locations) scattering performance is more sensitive to eta(t)=square root micro(t)/epsilon(t) than n(t)=square root micro(t)epsilon(t).

PMID:
17930824
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