Title :
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
fDate :
7/3/1905 12:00:00 AM
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;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2011.2181306
