Two-dimensional metamaterial device design in the discrete dipole approximation

TitleTwo-dimensional metamaterial device design in the discrete dipole approximation
Publication TypeJournal Article
Year of Publication2014
AuthorsN. Landy, D.R. Smith
JournalJournal of Applied Physics
Volume116
Issue4
Pagination044906
Date PublishedApr-07-2016
ISSN0021-8979
Abstract

We extend the discrete dipole method to enable the analysis and design of two-dimensional magnetoelectric metamaterial devices based on transformation optics. Key to this method is the evaluation of the dipole moments of the metamaterial elements, which can be accomplished within the framework of a rigorous Bloch wave model based on lattice sums. Corrections to the polarizabilities for spatial dispersion and magnetoelectric coupling are included in the formulation of a generalized Clausius-Mossotti relationship. We demonstrate the utility of the extended approach by designing a cloaking structure that shows considerably improved performance over that designed by assuming the standard Clausius-Mossotti relationship between constitutive parameter and polarizability.

DOI10.1063/1.4891295
Short TitleJ. Appl. Phys.