Building elements of a volumetric metamaterial

Summary form only given, as follows. This paper presents the results of an investigation into a combination of electric and magnetic planar resonators in order to design the element of a volumetric metamaterial showing simultaneously negative electric and magnetic polarizability. The magnetic element is a split ring resonator, and the electric element is an electric dipole terminated by an inductor. The response of the single resonant particle is strongly anisotropic. Proper spatial arrangement of these particles can make the response isotropic. The possibility of obtaining a non-bianisotropic response is taken into account.