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May 10 2013

Invisibility Cloak Scientists Demonstrate Same Effect For Heat

Light and sound waves can be passed around objects, making them invisible since there is no shadow behind the object, by means of special meta-materials. Karlsruhe Institute of Technology researchers, who previously developed the world's first three-dimensional invisibility cloak for visible light, now succeeded in demonstrating that these special materials can also be used to specifically influence the propagation of heat. A structured plate of copper and silicon was shown to conduct heat around a central area without the edge being affected.

"For the thermal invisibility cloak, both materials have to be arranged smartly," explains Robert Schittny from KIT, the first author of the study which was presented in the Physical Review Letters journal.

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