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Cloaks for hiding heat

Proposed shield could protect computers or satellites from high temperatures

1:48pm, March 29, 2012

A new type of "invisibility" cloak could take the heat off hot devices. A theoretical cloak that can shield a protected area from intense temperatures is described online March 26 in Optics Express.

“You can just dress your satellite in a thermal cloak,” says study author Sebastien Guenneau, of the French National Center for Scientific Research and the University of Aix-Marseille. A heat cloak just 1 or 2 centimeters thick might potentially protect a satellite from overheating as it re-entered the atmosphere, he says.

Until now, most invisibility cloaks have been made from metamaterials that guide light wav

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