News From the Field
Caltech Researchers Create 'Sound Bullets'
April 21, 2010
Taking inspiration from a popular executive toy ("Newton's cradle"), researchers at Caltech have built a device--called a nonlinear acoustic lens--that produces highly focused, high-amplitude acoustic signals dubbed "sound bullets." The acoustic lens and its sound bullets (which can exist in fluids--as well as in solids) have the potential to revolutionize applications from medical imaging and therapy to the nondestructive evaluation of materials and engineering systems.
California Institute of Technology
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