Comment on "Negative refractive index in artificial metamaterials"
Date of this Version6-1-2007
This document has been peer-reviewed.
We dispute Grigorenko's statement [Opt. Lett. 31, 2483 (2006)] that measuring only the reflection intensity spectrum is sufficient for determining the effective refractive index. In addition, our simulations do not confirm his conclusions regarding the negative refractive index and the negative permeability of the nanopillar sample in the visible range.