Chiral Metamaterials With Negative Refractive Index Composed by an Eight-Cranks Molecule

Author

Molina-Cuberos, Gregorio J. ; García-Collado, Ángel J. ; Barba, Ismael ; Margineda, José

Author_Institution

Dipt. Electromagnetismo y Electron., Univ. de Murcia, Murcia, Spain

Volume

10

fYear

2011

fDate

7/3/1905 12:00:00 AM

Firstpage

1488

Lastpage

1490

Abstract

A chiral medium constituted by a two-dimensional lattice of eight cranks of the same handedness is studied and found that it exhibits a huge electromagnetic activity, circular dichroism, and negative refraction index. Using a free-wave experimental setup and numerical simulations, the transmission and reflection coefficients for a thin slab of such metamaterials were determined, and the effective values for the refractive index, electric permittivity, magnetic permeability, and chirality parameter were calculated. The obtained results by means of the simulation agree quite well with the ones calculated from the experimental measurements.

Keywords

chirality; electromagnetic wave reflection; electromagnetic wave transmission; metamaterials; permittivity; refractive index; chiral metamaterial; chirality parameter; circular dichroism; eight-cranks molecule; electric permittivity; electromagnetic activity; magnetic permeability; negative refractive index; reflection coefficient; thin slab; transmission coefficient; two-dimensional lattice; Materials science and technology; Metamaterials; Microwave measurements; Permeability; Permittivity; Refractive index; Chiral media; materials science and technology; metamaterials; microwave measurements;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2011.2181306

Filename

6111240