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Avalanches of popping bubbles in collapsing foams
N Vandewalle1, J F Lentz, S Dorbolo
1GRASP, Institut de Physique B5, Université de Liège, B-4000 Liège, Belgium.
Physical Review Letters
|January 3, 2001
Abstract:
We report acoustic measurements of popping bubbles during the collapsing of aqueous foams. The sound pattern is analyzed using classical methods of statistical physics. It is found that membrane rupture concerns a wide variety of situations: small and large membranes at the air/foam interface. Avalanches of popping bubbles are put into evidence. Time durations in between successive pops seem to be distributed on a universal power law.