Design of electromagnetic cloaks and concentrators using form-invariant coordinate transformations of Maxwell's equations

TitleDesign of electromagnetic cloaks and concentrators using form-invariant coordinate transformations of Maxwell's equations
Publication TypeJournal Article
Year of Publication2008
AuthorsM.. Rahm, D.. Schurig, D..A. Roberts, S..A. Cummer, D.R. Smith, J..B. Pendry
JournalPhotonics and Nanostructures-Fundamentals and Applications
Volume6
Issue1
Pagination87-95
ISBN Number1569-4410
Accession NumberWOS:000255667700013
Abstract

The technique of applying form-invariant, spatial coordinate transformations of Maxwell's equations can facilitate the design of structures with unique electromagnetic or optical functionality. Here, we illustrate the transformation-optical approach in the designs of a square electromagnetic cloak and an omni-directional electromagnetic field concentrator. The transformation equations are described and the functionality of the devices is numerically confirmed by two-dimensional finite element simulations. The two devices presented demonstrate that the transformation optic approach leads to the specification of complex, anisotropic and inhomogeneous materials with well directed and distinct electromagnetic behavior. (c) 2007 Elsevier B.V. All rights reserved.