Institut des
NanoSciences de Paris
Accueil > Evénements > Séminaires > Archives 2012 > Wetting transitions (...)

Séminaire général

Wetting transitions of liquids on solid surfaces

Milton W. Cole

Water beads up to form little droplets on a teflon frying plan. In contrast, water films spread uniformly across some other surfaces. What is the origin of this difference ? The answer to this question can be understood in simple physical terms, as described in this talk. Also discussed is a remarkable “wetting phase transition” that has been in seen for various liquids and surfaces. At low temperature, these liquids bead up while at high temperature they spread. This transition is observed in both equilibrium studies and flow measurements. Although the transition is predicted to occur for water, such a transition has never been studied in the laboratory.