Departmental Papers (ESE)

Document Type

Journal Article

Date of this Version

February 2007

Comments

Copyright American Physical Society. Reprinted from Physical Review B, Volume 75, Article 075119, February 2007, 10 pages.
Publisher URL: http://dx.doi.org/10.1103/PhysRevB.75.075119

Abstract

In this work, we study the electrodynamics of metamaterials that consist of resonant non-magnetic inclusions embedded in an epsilon-near-zero (ENZ) host medium. It is shown that the inclusions can be designed in such a way that both the effective permittivity and permeability of the composite structure are simultaneously zero. Two different metamaterial configurations are studied and analyzed in detail. For a particular class of problems, it is analytically proven that such matched zero-index metamaterials may help improving the transmission through a waveguide bend, and that the scattering parameters may be completely independent of the specific arrangement of the inclusions and of the granularity of the crystal. The proposed concepts are numerically demonstrated at microwaves with a metamaterial realistic realization based on an artificial plasma.

Keywords

metamaterials, optical design techniques, optical materials, permittivity, inclusions, magnetic permeability, granular structure, crystal structure

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Date Posted: 10 April 2007

This document has been peer reviewed.