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NSF PR 02-63 - July 24, 2002

Note About Images

Photo 1

A cloud of gas bubbles in a liquid excited by ultrasound (generated by a titanium rod vibrating 20,000 times a second) can emit flashes of light (sonoluminescence) due to extreme temperatures inside the bubbles as they collapse.
Photo credit: K. S. Suslick and K. J. Kolbeck, University of Illinois

Photo 2

Gas bubbles form and collapse when a liquid is energized by ultrasound.
Photo credit: K. S. Suslick and K. J. Kolbeck, University of Illinois

Photo 3

False color image of sonoluminescence: gas bubbles excited by ultrasound waves emit flashes of light due to extreme temperatures inside the bubbles.
Photo credit: K. S. Suslick and K. J. Kolbeck, University of Illinois

Photo 4

False color image of ultrasound emitted by a titanium rod.
Photo credit: K. S. Suslick and K. J. Kolbeck, University of Illinois

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