title: Controlling electromagnetic scattering of a cavity by transformation media.
abstract: Based on the transformation media theory, we proposed a way to control the scattering of a cavity, or trench, located on a metallic plane. Specifically, we show how is possible to design transformation medium to fill up a cavity with arbitrary cross section, which is capable of enhancing the specularly reflection wave. As the inverse problem, we also address the design of transformation medium coating, which is laid on the metallic plane, to mimic the scattering of the cavity. Based on the effective medium theory, the transformation medium for the case of a polygonal cavity can be realized by oblique layered structures, and each layered structure is consisting of two kinds of isotropic dielectrics, thus leading an ease of practical fabrication.
authors.affiliation: College of Electronic and Information Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China.
authors.forename: Shenyun
authors.initials: S
authors.lastname: Wang
authors.forename: Shaobin
authors.initials: S
authors.lastname: Liu
mesh_terms: D003198:Computer Simulation; D004574:Electromagnetic Fields; D008420:Manufactured Materials; D008962:Models, Theoretical; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*