Hydrodynamic boundary conditions and dynamic forces between bubbles and surfaces

Ofer Manor*, Ivan Uriev Vakarelski, Xiaosong Tang, Sean J. O'Shea, Geoffrey W. Stevens, Franz Grieser, Raymond R. Dagastine, Derek Y C Chan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

88 Scopus citations

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.

Original languageEnglish (US)
Article number024501
JournalPhysical Review Letters
Volume101
Issue number2
DOIs
StatePublished - Jul 11 2008

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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