Achieving multifrequency cloaking with a single shell of multiple plasmonic constituents

摘要

We investigate the possibility of achieving the scattering cancellation cloaking at different frequencies with a single shell composed of multiple plasmonic constituents simultaneously, without increasing the physical size of the whole system. Our theory results based on the Mie scattering theory show that the number of cloaking frequencies can be increased by adding extra plasmonic constituents, which are further verified by simulating electromagnetic propagation with finite element method. A special design has also been proposed, showing its great feasibility in the practical application.