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Quest for invisibility cloaks revisited by two research groups

Ross Miller

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After a brief period of no news, it's time to revisit the world of invisible cloaks. Inspired by the ideas of theoretical physicist John Pendry at Imperial College, London, two separate groups of researchers from Cornell University and UC Berkeley claim to have prototyped their own cloaking devices. Both work essentially the same way: the object is hidden by mirrors that look entirely flat thanks to tiny silicon nanopillars that steer reflected light in such a way to create the illusion. It gets a bit technical, sure, but hopefully from at least one of these projects we'll get a video presentation that's sure to make us downright giddy.

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