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