Wetting of soap bubbles on hydrophilic, hydrophobic and superhydrophobic surfaces
Fluid Dynamics
2015-06-15 v1 Soft Condensed Matter
Abstract
Wetting of sessile bubbles on solid and liquid surfaces has been studied. A model is presented for the contact angle of a sessile bubble based on a modified Young equation - the experimental results agree with the model. A hydrophilic surface results in a bubble contact angle of 90 deg whereas on a superhydrophobic surface one observes 134 deg. For hydrophilic surfaces, the bubble angle diminishes with bubble radius - whereas on a superhydrophobic surface, the bubble angle increases. The size of the Plateau borders governs the bubble contact angle - depending on the wetting of the surface.
Keywords
Cite
@article{arxiv.1303.6414,
title = {Wetting of soap bubbles on hydrophilic, hydrophobic and superhydrophobic surfaces},
author = {Steve Arscott},
journal= {arXiv preprint arXiv:1303.6414},
year = {2015}
}