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Viscosity Destabilizes Sonoluminescing Bubbles

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Luther,  Stefan
Research Group Biomedical Physics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Citation

Toegel, R., Luther, S., & Lohse, D. (2006). Viscosity Destabilizes Sonoluminescing Bubbles. Physical Review Letters, 114301-1-114301-4. doi:10.1103/PhysRevLett.96.114301.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0029-14FF-6
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.