Faculty Advisor

Dr. Rafael Garcia

Faculty Advisor

Dr. Stephan A. Koehler

Faculty Advisor

Dr. Alex A. Zozulya

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."

Publisher

Worcester Polytechnic Institute

Degree Name

MS

Department

Physics

Project Type

Thesis

Date Accepted

2009-06-29

Accessibility

Unrestricted

Subjects

wetting transitions, water, gold, graphite, silicon, contact angle, matlab

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