June 25, 2011

Acoustic 'Cloaking Device' Blocks Sound

Jason Palmer, BBC News


BBC

Scientists have shown off a "cloaking device" that makes objects invisible - to sound waves.

Such acoustic cloaking was proposed theoretically in 2008 but has only this year been put into practice.

Described in Physical Review Letters, the approach borrows many ideas from attempts to "cloak" objects from light.

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TAGGED: Metamaterials, Cloaking Device, Sound