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

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4 Author(s)
Molina-Cuberos, G.J. ; Dipt. Electromagnetismo y Electron., Univ. de Murcia, Murcia, Spain ; Garcia-Collado, A.J. ; Barba, I. ; Margineda, J.

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.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:10 )