Acoustic Cloak Designed

June 17, 2008 | Source: Technology Review

Engineers at Polytechnic University of Valencia have designed a metamaterial that redirects sounds and could be used in buildings to shield them from noises.

The sound-shielding material comprises arrays of sonic crystals, which, if made, would be the first acoustic cloaking device. It could also be useful in hiding military ships and other vessels from sonar.