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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 23 — Aug. 10, 2007
  • pp: 5835–5839

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

Thierry Corti and Ulrich K. Krieger  »View Author Affiliations


Applied Optics, Vol. 46, Issue 23, pp. 5835-5839 (2007)
http://dx.doi.org/10.1364/AO.46.005835


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Abstract

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°. Improvements in instrument design are proposed to lower the detection limit to 0.5° or below.

© 2007 Optical Society of America

OCIS Codes
(000.3110) General : Instruments, apparatus, and components common to the sciences
(120.4640) Instrumentation, measurement, and metrology : Optical instruments

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: March 16, 2007
Revised Manuscript: June 27, 2007
Manuscript Accepted: June 28, 2007
Published: August 9, 2007

Citation
Thierry Corti and Ulrich K. Krieger, "Improved inverted bubble method for measuring small contact angles at crystal-solution-vapor interfaces," Appl. Opt. 46, 5835-5839 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-23-5835


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