Wetting in a Colloidal Liquid-Gas System

W. K. Wijting, N. A. M. Besseling, M. A. Cohen Stuart
2003 Physical Review Letters  
We present first observations of wetting phenomena in depletion interaction driven, phase separated colloidal dispersions (coated silica-cyclohexane-polydimethylsiloxane). The contact angle of the colloidal liquid-gas interface at a solid substrate (coated glass) was determined for a series of compositions. Upon approach to the critical point, a transition occurs from partial to complete wetting.
doi:10.1103/physrevlett.90.196101 pmid:12785958 fatcat:3lwotr5lmbevlcrxuztky5w7jy