Scattering by lossy anisotropic scatterers: A modal approach

Scattering from anisotropic geometries of arbitrary shape is relatively difficult to interpret physically, involving the intricate interplay between material and geometric effects. Insights into complex scattering mechanisms are often enabled by modal methods that decompose response well-understood multipolar resonances. Here, we extend generalized normal mode expansion lossy scatterers. Unique method it decomposes total any resonator modes corresponding isotropic resonator. This disentangles contributions Furthermore, can identify absorption resonances with separate sets modes. We illustrate our considering an infinitely long cylinder concentric metallic/dielectric layers, targeting case effective hyperbolic response. show scanning composition medium, achieve desired effect, including backscattering cancellation.