title: Electromagnetic analysis of cylindrical invisibility cloaks and the mirage effect.
abstract: We present a finite-element analysis of a diffraction problem involving a coated cylinder enabling the electromagnetic cloaking of a lossy object with sharp wedges located within its core. The coating consists of a heterogeneous anisotropic material deduced from a geometrical transformation as first proposed by Pendry [Science 312, 1780 (2006)]. We analyze the electromagnetic response of the cloak in the presence of an electric line source in p polarization and a loop of magnetic current in s polarization. We find that the electromagnetic field radiated by such a source located a fraction of a wavelength from the cloak is perturbed by less than 1%. When the source lies in the coating, it seems to radiate from a shifted location.
authors.affiliation: Institut Fresnel, UMR CNRS 6133, University Aix-Marseille, France.
authors.forename: Frédéric
authors.initials: F
authors.lastname: Zolla
authors.forename: Sébastien
authors.initials: S
authors.lastname: Guenneau
authors.forename: André
authors.initials: A
authors.lastname: Nicolet
authors.forename: J B
authors.initials: JB
authors.lastname: Pendry