Transparent Nanoprobes in Integrated Plasmonic Circuits Based on Plasmonic Cloaking

Cloaking of nanoscopic objects via the scattering-cancellation technique is theoretically demonstrated in integrated plasmonic circuits with deep subwavelength confinement in the infrared. By proper design of the cloaking shell, transparency of the cloaked objects can be achieved, even when these objects occupy the whole cross section of a metal-insulator-metal waveguide. The effects of material losses, possible implementations, and potential applications are discussed.