Substrate-induced bianisotropy in metamaterials

We demonstrate that the presence of a supporting substrate can break the symmetry of a metamaterial structure, changing the symmetry of its effective parameters, and giving rise to bianisotropy. This indicates that magnetoelectric coupling will occur in all metamaterials fabricated on a substrate, including those with symmetric designs. (C) 2010 American Institute of Physics. [doi:10.1063/1.3486480]