Towards hyperbolic radial anisotropy using layered spheres

Metamaterials with hyperbolic dielectric or magnetic anisotropy exhibit many exotic properties, as is evident from the recent review by A. Poddubny et al. (Nature Photonics, 7, 2013, pp. 958–967). In this presentation, we continue the work on radially anisotropic (RA) spheres (H. Wallén et al., Radio Science, accepted in Dec. 2014) by studying the theoretical performance of a layered metal-dielectric realization, with special focus on the anomalous losses in the hyperbolic case.