1303.6414 (Steve Arscott)

Wetting of soap bubbles on hydrophilic, hydrophobic and superhydrophobic
surfaces    [PDF]

Steve Arscott

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.

View original: http://arxiv.org/abs/1303.6414