Anapole states and scattering deflection effects in anisotropic van der Waals nanoparticles

Transition metal dichalcogenides (TMDCs), belonging to the class of van der Waals materials, are promising materials for optoelectronics and photonics. In particular, their giant optical anisotropy may enable important effects when employed in nanostructures with finite thickness. this paper, we theoretically numerically study light scattering behavior from anisotropic MoS2 nanocylinders, highlight its distinct features advantageous over response conventional silicon particles same shape. We establish two remarkable phenomena, appearing particle optimized geometry. The first one is a pure magnetic dipole associated excitation electric-dipole anapole states. Previously reported core-shell hybrid (metal/dielectric) systems only, it now demonstrated an all-dielectric particle. second phenomenon super-deflection far field: maximum occur wide range directions, including forward-, backward- side-scattering depending on mutual orientation nanocylinder incident wave. contrast well-known Kerker anti-Kerker effects, which appear nanoparticles at different frequencies, can be achieved by rotating constant frequency light. Our results facilitate development functional devices incorporating nanostructured TMDCs encourage further research meta-optics based highly materials.