摘要

We provide a full-wave electromagnetic (EM) scattering theory of discussing the electromagnetic scattering efficiency of radially anisotropic nanocylinders. In the long-wavelength limit, we derive the conditions for observing unusual EM scattering including non-Rayleigh vanishing and diverging ones. To verify our theoretical predictions, both full-wave numerical results and numerical simulations are performed, and good agreement is found. Moreover, physical origins of the anomalous phenomena are given. Therefore, the anisotropic nanowires under certain conditions can be hardly visible or exhibit superscattering. These results may find potential applications in different fields of nanotechnology.