Physics Asked on June 14, 2021
According to Wikipedia, contact angle depends on the hydrophobicity of the surface and on thermodynamic equilibrium. But how does it in theory depend on the drop size? In other words, how would a theoretical curve of contact-angle ($theta$) vs. drop-volume ($V$) look like, for a given surface?
Vafaei & Podowski derived such theory, which seems to agree well with experimental data. Another interesting relation between contact angle and drop height appears in a paper by Srinivasan et. al. (pp. 16-17):
Answered by Sparkler on June 14, 2021
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