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Berkeley researchers create first hyperlens for sound waves

Hyperlens

EurekAlert

http://www.eurekalert.org/pub_releases/2009-10/dbnl-brc102309.php

Oct 25, 2009

Ultrasound and underwater sonar devices could "see" a big improvement thanks to the development at UC Berkeley of the world's first acoustic hyperlens, which provides an eightfold boost in the magnification power of sound-based imaging technologies. "We have successfully carried out an experimental demonstration of an acoustic hyperlens that magnifies sub-wavelength objects by gradually converting evanescent waves into propagating waves," said Berkeley Engineering professor Xiang Zhang, a principal investigator.