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Spherical cloaking using nonlinear transformations for improved segmentation into concentric isotropic coatings

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Spherical cloaking using nonlinear transformations for improved segmentation into concentric isotropic coatings

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Title: Spherical cloaking using nonlinear transformations for improved segmentation into concentric isotropic coatings
Author: Qiu, Cheng Wei; Hu, Li; Zhang, Baile; Wu, Bae-Ian; Johnson, Steven G.; Joannopoulos, John D.
Copyright year: 2009
Abstract: Two novel classes of spherical invisibility cloaks based on nonlinear transformation have been studied. The cloaking characteristics are presented by segmenting the nonlinear transformation based spherical cloak into concentric isotropic homogeneous coatings. Detailed investigations of the optimal discretization (e.g., thickness control of each layer, nonlinear factor, etc.) are presented for both linear and nonlinear spherical cloaks and their effects on invisibility performance are also discussed. The cloaking properties and our choice of optimal segmentation are verified by the numerical simulation of not only near-field electric-field distribution but also the far-field radar cross section (RCS).
Subject: DRNTU::Engineering::Mathematics and analysis::Simulations.
Type: Journal Article
Series/ Journal Title: Optics express
School: School of Physical and Mathematical Sciences
Rights: © 2009 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint (preprint) with permission of Optical Society of America. The paper can be found at the following official URL: [http://dx.doi.org/10.1364/OE.17.013467].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Version: Published version

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