News From the Field
Caltech Researchers Create 'Sound Bullets'
April 21, 2010
This material is available primarily for archival purposes. Telephone numbers or other contact information may be out of date; please see current contact information at media contacts.Taking inspiration from a popular executive toy ("Newton's cradle"), researchers at Caltech have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. Full Story
California Institute of Technology
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