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Title: Hydrodynamic boundary conditions and dynamic forces between bubbles and surfaces
Authors: Manor, O.
Vakarelski, I.U.
Tang, X.
O'Shea, S.J.
Stevens, G.W.
Grieser, F.
Dagastine, R.R.
Chan, D.Y.C. 
Issue Date: 11-Jul-2008
Citation: Manor, O., Vakarelski, I.U., Tang, X., O'Shea, S.J., Stevens, G.W., Grieser, F., Dagastine, R.R., Chan, D.Y.C. (2008-07-11). Hydrodynamic boundary conditions and dynamic forces between bubbles and surfaces. Physical Review Letters 101 (2) : -. ScholarBank@NUS Repository.
Abstract: Dynamic forces between a 50μm radius bubble driven towards and from a mica plate using an atomic force microscope in electrolyte and in surfactant exhibit different hydrodynamic boundary conditions at the bubble surface. In added surfactant, the forces are consistent with the no-slip boundary condition at the mica and bubble surfaces. With no surfactant, a new boundary condition that accounts for the transport of trace surface impurities explains variations of dynamic forces at different speeds and provides a direct connection between dynamic forces and surface transport effects at the air-water interface. © 2008 The American Physical Society.
Source Title: Physical Review Letters
ISSN: 00319007
DOI: 10.1103/PhysRevLett.101.024501
Appears in Collections:Staff Publications

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