Title :
Near-Infrared Invisibility Cloak Engineered With Two-Phase Metal-Dielectric Composites
Author :
Kormoczi, Koppany ; Szabo, Zsolt
Author_Institution :
Dept. of Broadband Infocommunications & Electromagn. Theor., Budapest Univ. of Technol. & Econ., Budapest, Hungary
Abstract :
An electromagnetic cloaking device made with composite materials and operating in the range of near-infrared light is presented. The invisibility cloak is designed with transformation optics and consists of 15 concentric rings of different anisotropic two-phase metal-dielectric composites. The anisotropic material parameters of the nanocomposites are expressed with the Maxwell-Garnett mixing rule. The finite element simulation of the concealment produced by the multilayer nanocomposite is discussed. The geometry of the inclusions and the material parameters of the composites are determined with differential evolution-based optimization.
Keywords :
Maxwell equations; finite element analysis; nanocomposites; optical cloaking; optical design techniques; optical multilayers; Maxwell-Garnett mixing rule; anisotropic material parameters; anisotropic two-phase metal-dielectric composites; composite materials; concentric rings; differential evolution-based optimization; electromagnetic cloaking device; finite element simulation; inclusion geometry; multilayer nanocomposite; nanocomposites; near-infrared invisibility cloak; near-infrared light; transformation optics; Electromagnetic scattering; Electromagnetics; Magnetic multilayers; Nanocomposites; Nonhomogeneous media; Permittivity; Finite element method; meta-materials; nanocomposites; optimization;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2013.2281224
