Work

Design of matched zero-index metamaterials using nonmagnetic inclusions in epsilon-near-zero media

Year: 2007

Type: article

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.

Source: Physical Review B

DOI: 10.1103/physrevb.75.075119

Authors: Mário Silveirinha, Nader Engheta

Institutions: University of Coimbra, University of Pennsylvania

Language: English

Topic: Metamaterials and Metasurfaces Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: U.S. Air Force, Fundação para a Ciência e a Tecnologia, Air Force Office of Scientific Research

Award: G7090116110