An Evaluation of Polarisability Tensors of Arbitrarily Shaped Highly   Conducting Bodies
  A full-wave numerical scheme of polarisability tensors evaluation is presented. The method accepts highly conducting bodies of arbitrary shape and explicitly accounts for the radiation as well as ohmic losses. The method is verified on canonical bodies with known polarisability tensors, such as a sphere and a cube, as well as on realistic scatterers. The theoretical developments are followed by a freely available code whose sole user input is the triangular mesh covering the surface of the body under consideration. 
L. Jelinek, O. Kratky, M. Capek
physics.comp-ph physics.class-ph