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Three-phase contact line profile between a large air bubble and a flat solid surface.

M Mukherjee1, A K Lahiri

  • 1Department of Metallurgy, Indian Institute of Science, Bangalore 560 012, India. manas@met.iisc.ernet.in

Journal of Colloid and Interface Science
|July 16, 2005
PubMed
Summary
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The study observed how the three-phase contact line spreads after thin film rupture between an air bubble and a solid surface. Results show the contact line is noncircular for deformed bubbles.

Area of Science:

  • Fluid dynamics
  • Surface science
  • Wettability studies

Background:

  • Understanding thin film rupture dynamics is crucial for processes involving fluid-solid interfaces.
  • The behavior of the three-phase contact (TPC) line influences phenomena like droplet spreading and dewetting.

Purpose of the Study:

  • To experimentally investigate the spreading dynamics of the TPC line following thin film rupture.
  • To analyze the geometric profile of the TPC line in the context of air bubble deformation.

Main Methods:

  • Utilized a CCD high-speed video technique for precise observation.
  • Focused on the rupture of the thin liquid film between a large air bubble and a flat solid surface.

Main Results:

Related Experiment Videos

  • The TPC line profile was found to be noncircular when the bubble was deformed.
  • Observed the dynamic spreading of the TPC line post-rupture.

    • Conclusions:

    • Bubble deformation significantly impacts the TPC line geometry.
    • The study provides insights into the complex fluid dynamics at the three-phase contact during film rupture.