Memory effect on acoustic cavitation

Oguz Yavas; Paul Leiderer; Hee K. Park; Constantine P. Grigoropoulos; Chie C. Poon; Andrew C. Tam

doi:10.1117/12.203635

1 March 1995 Memory effect on acoustic cavitation

Oguz Yavas, Paul Leiderer, Hee K. Park, Constantine P. Grigoropoulos, Chie C. Poon, Andrew C. Tam

Proceedings Volume 2498, Laser Methods of Surface Treatment and Modification: ALT '94 International Conference; (1995) https://doi.org/10.1117/12.203635
Event: Laser Methods of Surface Treatment and Modification: ALT '94 International Conference, 1994, Konstanz, Germany

Abstract

The formation of bubbles at a liquid-solid interface due to acoustic cavitation depends particularly on the preconditions of the interface. Here, it is shown that following laser- induced bubble formation at the interface the acoustic cavitation efficiency is strongly enhanced. Optical reflectance measurements reveal that this observed enhancement of acoustic cavitation due to preceding laser-induced bubble formation, which could be termed as a memory effect, decays in a few hundred microseconds. By performing a double-pulse experiment using two excimer lasers the influence of process parameters, such as liquid temperature and salt concentration, on the temporal decay of the memory effect has been studied. An analysis of the experimental results by a diffusion model is presented.

Citation Download Citation

Oguz Yavas, Paul Leiderer, Hee K. Park, Constantine P. Grigoropoulos, Chie C. Poon, and Andrew C. Tam "Memory effect on acoustic cavitation", Proc. SPIE 2498, Laser Methods of Surface Treatment and Modification: ALT '94 International Conference, (1 March 1995); https://doi.org/10.1117/12.203635

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