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Thursday, June 11, 2009

Cloaking Made Simpler, but Invisible Humans Not Yet a Reality

In recent years, optics researchers have come up with numerous concepts for invisibility cloaks—camouflaging that would effectively reroute light so as to conceal an object within. Most of those approaches have relied on so-called metamaterials, carefully engineered structures designed to have bizarre optical properties. But a team of researchers has now designed a much simpler cloaking apparatus that does away with the need for metamaterials entirely. Even if a Harry Potter–style invisibility cloak never materializes, the simplification of such extreme light manipulation may have more immediate applications in communications and computing.

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