Anomalous electromagnetic scattering from radially anisotropic nanowires

摘要

We provide a full-wave electromagnetic (EM) scattering theory of discussing the electromagnetic scatteringnefficiency of radially anisotropic nanocylinders. In the long-wavelength limit, we derive the conditions fornobserving unusual EMscattering including non-Rayleigh vanishing and diverging ones. To verify our theoreticalnpredictions, both full-wave numerical results and numerical simulations are performed, and good agreement isnfound. Moreover, physical origins of the anomalous phenomena are given. Therefore, the anisotropic nanowiresnunder certain conditions can be hardly visible or exhibit superscattering. These results may find potentialnapplications in different fields of nanotechnology.