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Updated: Aug 7, 2026

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
Published on: May 9, 2021
Photoacoustic study of relaxation dynamics in multibubble systems in laser-superheated water
Sergey I Kudryashov1, Kevin Lyon, Susan D Allen
1Department of Chemistry and Physics, Arkansas State University, Jonesboro, 72467-0419, USA. skudryashov@astate.edu
Abstract:
Microsecond relaxation dynamics in a cavitating surface layer of bulk water superheated by a TEA CO(2) laser was studied using contact broadband photoacoustic spectroscopy. Damped nanosecond and microsecond oscillatory pressure-tension cycles recorded by an acoustic transducer are related to oscillations of steam bubbles of different sizes exhibiting strong dissipative losses and collective (coalescence and percolation) phenomena. These measurements also give important insight into basic parameters, characteristic spatial and temporal scales, and the mechanism of laser ablation of absorbing liquids in the thermal confinement regime.
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