Negative refractive index in artificial metamaterials

作者：A. N. Grigorenko · 发表于：Optics Letters · 年份：2006 · DOI：10.1364/ol.31.002483 · 被引用次数：26 · 研究领域：Metamaterials and Metasurfaces Applications、Plasmonic and Surface Plasmon Research、Photonic Crystals and Applications

We discuss optical constants in artificial metamaterials showing negative magnetic permeability and electric permittivity and suggest a simple formula for the refractive index of a general optical medium. Using the effective-field theory, we calculate the effective permeability and the refractive index of nanofabricated media composed of pairs of identical gold nanopillars with magnetic response in the visible spectrum.