Farhat M, Chen P-Y, Bagci H, Amra C, Guenneau S, Alù A
Division of Computer, Electrical, and Mathematical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
Department of Electrical and Computer Engineering, Wayne State University, Detroit, Michigan 48202, U.S.A.
Sci Rep. 2015 Apr 30;5:9876. doi: 10.1038/srep09876.
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.
我们基于散射抵消和地幔隐身的概念，从理论和数值上分析了热隐身性。我们表明，通过调整包围物体的球壳的热导率，可以使一个小物体对热扩散波完全不可见。这意味着物体的热散射被抑制，物体外部以及由这些球壳制成的隐身衣中的热流表现得就好像物体不存在一样。热隐身性可能会在红外热成像中隐藏热点、军事隐身以及减少电子设备发热等方面开辟新的前景。
