The "Centre National de la Recherche Scientifique" in France is working on using a cloaking device to keep things cool!
The researchers applied the mathematics of transformation optics to equations for thermal diffusion to create their thermal invisibility cloak. They altered the geometry of isotherms to make them go around rather than through a circular region so that any object placed in this region can be shielded from the flow of heat.
"We can design a cloak so that heat diffuses around an invisibility region, which is then protected from heat. Or we can force heat to concentrate in a small volume, which will then heat up very rapidly," Guenneau said.
http://www.edn.com/article/521344-_Thermal...NToday_20120329Maybe they'll be using it to keep iPad 4's cool! Maybe they can build them into the upcoming tricorders devices: