Effective properties of resonant arrays of rods

摘要

The effective electromagnetic properties of a metamaterial made of nanorods are investigated. It is found that near inner resonances there is a effective magnetic behavior. The domain of validity of the effective permeability model is determined with respect to the wavelength and the filling ratio by means of rigorous numerical computations. It is concluded that the relative dielectric constant should be higher than 32 and the filling ratio lower than 1/2.