Viscosity Destabilizes Sonoluminescing Bubbles


Toegel, Ruediger and Luther, Stefan and Lohse, Detlef (2006) Viscosity Destabilizes Sonoluminescing Bubbles. Physical Review Letters, 96 (11). p. 114301. ISSN 0031-9007

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Abstract:In single-bubble sonoluminescence (SBSL) microbubbles are trapped in a standing sound wave, typically in water or water-glycerol mixtures. However, in viscous liquids such as glycol, methylformamide, or sulphuric acid it is not possible to trap the bubble in a stable position. This is very peculiar as larger viscosity normally stabilizes the dynamics. Suslick and co-workers call this new mysterious state of SBSL "moving-SBSL." We identify the history force (a force nonlocal in time) as the origin of this destabilization and show that the instability is parametric. A force balance model quantitatively accounts for the observed quasiperiodic bubble trajectories.
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Copyright:© 2006 American Physical Society
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