Thermal invisibility based on scattering cancellation and mantle cloaking

M Farhat (1) , P.-y Chen (2) , H Bagci (1) , Claude Amra (3) , Sébastien Guenneau (4) , A. Alu (5)

1 Computer, Electrical and Mathematical Sciences and Engineering Division [Thuwal]
2 EECS - Department of Electrical Engineering and Computer Science
3 CONCEPT - CONCEPT
4 EPSILON - EPSILON
5 Department of Electrical and Computer Engineering [Austin]

We theoretically and numerically analyze thermal invisibility based on the concept of scattering cancellation and mantle cloaking. We show that a small object can be made completely invisible to heat diffusion waves, by tailoring the heat conductivity of the spherical shell enclosing the object. This means that the thermal scattering from the object is suppressed, and the heat flow outside the object and the cloak made of these spherical shells behaves as if the object is not present. Thermal invisibility may open new vistas in hiding hot spots in infrared thermography, military furtivity, and electronics heating reduction.

Mots clés: Frequencies; Heat

Domaines: Thermique [physics.class-ph]

M Farhat, P.-y Chen, H Bagci, Claude Amra, Sébastien Guenneau, et al.. Thermal invisibility based on scattering cancellation and mantle cloaking. Scientific Reports, 2015, 5, pp.9876. ⟨10.1038/srep09876⟩. ⟨hal-01213999⟩