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Improved inverted bubble method for measuring small contact angles at crystal-solution-vapor interfaces.
Journal article

Improved inverted bubble method for measuring small contact angles at crystal-solution-vapor interfaces.

  • Corti T Institute for Atmospheric and Clomate Science, ETH Zurich, Switzerland. thierry.corti@env.ethz.ch
  • Krieger UK
  • 2007-08-19
Published in:
  • Applied optics. - 2007
English We propose and evaluate an improvement of the inverted bubble method, originally proposed by McLachlan and Cox [Rev. Sci. Instrum. 46, 80 (1975)], a technique for measuring small contact angles at crystal-solution-vapor interfaces on a gas bubble under a solid immersed in a test solution. A simple experimental setup is used to evaluate the proposed method. We conclude that the method is suitable for measuring small contact angles with a minimum detectable angle of about 3 degrees . Improvements in instrument design are proposed to lower the detection limit to 0.5 degrees or below.
Language
  • English
Open access status
closed
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Persistent URL
https://sonar.ch/global/documents/123631
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