Electromagnetic wave interactions with a metamaterial cloak.
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).
Chen
Hongsheng
H
The Electromagnetics Academy at Zhejiang University, Zhejiang University, Hangzhou 310058, China. chenhs@ewt.mit.edu
Wu
Bae-Ian
BI
Zhang
Baile
B
Kong
Jin Au
JA