Our work on thermal metamaterials is now highlighted by Philip Ball in , News and views, Nature Materials. You can find the article here.

The main thrust of the view is inverting  thermal diffusion in a thermal gradient using thermal metamaterials.

The pictures shown below is one that can illustrate what I am talking about. There is a gradient  from left to right, but within our metamaterial shell, we observe the gradient to be from right to left. The metamaterial device is constructed out of isotropic materials arranged in a spiral fashion( derived by coordinate transformation) to form the anisotropic device. 



This is a experimental demonstration of thermal metamaterial.


The concept of heat has been known for a long time, and yet it is nontrivial to manipulate its flow. Here, we show that artificial materials can be engineered to guide the heat flow in unconventional ways. The conductivity of the artificial materials are engineered for diffusive energy transport of thermal conduction and experimentally shielding, concentrating, and inverting the applied heat flux.

The artificially engineered materials are otherwise known as metamaterials.

I will upload more details once the paper is published.

The acceptance notice is here.