Non-local effective medium of metamaterial
Materials Science
2007-05-23 v1
Abstract
In this paper, we investigate the effect of spatial dispersion on a double-lattice metamaterial which has both magnetic and electric response. A numerical scheme based on a dipolar model is developed to extract the non-local effective medium of the metamaterial. We found a structure-induced bianisotropy near the resonance gap even if the artificial particles are free from cross-coupling. A cross-coupled resonance also results from spatial dispersion and it can be understood using a Lorentz frequency dispersion model. The strength of the cross-coupled resonance depends on the microstructure and it is larger at a higher normalized frequency.
Keywords
Cite
@article{arxiv.cond-mat/0701332,
title = {Non-local effective medium of metamaterial},
author = {Jensen Li and J. B. Pendry},
journal= {arXiv preprint arXiv:cond-mat/0701332},
year = {2007}
}
Comments
11 pages,10 figures, 2 tables