Omnidirectional thermal-electric signatures of functional illusion device with anisotropic geometry.

The omnidirectional thermal-electric signatures induced by the anisotropic functional illusion device and the corresponding camouflage device are reported. We first theoretically derive the anisotropic effective parameters of confocal elliptical bilayer core-shell structure for constructing the functional illusion device. Then, the thermal-electric signatures of the functional illusion device with camouflage device are presented numerically. In addition, we further transform the monolayered structure of the camouflage device into an alternating multilayered one to enrich the omnidirectional illusion effects. The results show that the functional illusion device with monolayered structure could realize omnidirectional thermal-electric illusion effects perfectly. When the monolayered structure is replaced by the alternating multilayered one, the functional illusion device with alternating multilayered structure could achieve different illusion effects with different scattering signatures under different directional heat flux and electric current launching. This article may open a new avenue to realize omnidirectional illusion effects of functional device in multiphysical fields.