Worcester Polytechnic Institute Electronic Theses and Dissertations Collection

Title page for ETD etd-062909-113303


Document Typethesis
Author NameOsborne III, Kenneth L
URNetd-062909-113303
TitleTemperature-Dependence of the Contact Angle of Water on Graphite, Silicon, and Gold
DegreeMS
DepartmentPhysics
Advisors
  • Dr. Rafael Garcia, Advisor
  • Dr. Stephan A. Koehler, Graduate Committee Rep
  • Dr. Alex A. Zozulya, Graduate Committee Rep
  • Keywords
  • wetting transitions
  • water
  • gold
  • graphite
  • silicon
  • contact angle
  • matlab
  • Date of Presentation/Defense2009-04-23
    Availability unrestricted

    Abstract

    The temperature dependence of the contact angle of water on graphite, silicon and gold was investigated under various conditions to test the Sharp-Kink Approximation. Despite correctly predicting the contact angle at room temperature, the ideal Sharp-Kink Approximation was not found to accurately describe the contact angle's temperature dependence. The discrepancies from the predicted contact angle were characterized in terms of a correction H(T) to the liquid-solid surface tension. H(T) was found to be linear in temperature and decreasing, and is consistent with electrostatic charge effects.

    Files
  • compendium_042109.pdf

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