5 papers · 1 filter
On fluid/wall slippage
Pierre-Gilles de Gennes
Certain (non polymeric) fluids show an anomalously low friction when flowing against well chosen solid walls. We discuss here one possible explanation, postulating that a gaseous f…
Instabilities during the evaporation of a film: non glassy polymer + volatile solvent
Pierre-Gilles de Gennes
We consider solutions where the surface tension of the solvent is smaller than the surface tension of the polymer. In an evaporating film, a plume of solvent rich fluid, then induc…
"Young" soap films
Pierre-Gilles de Gennes
If we pull out rapidly a metallic frame out of a surfactant solution, we arrive at a "young" soap film with relatively simple features, as noticed first by Lucassen. The weight of…
Two remarks on wetting and emulsions
Pierre-Gilles de Gennes
This paper is extracted from an opening address given at the workshop "Wetting: from microscopic origins to industrial applications" (Giens, May 6-12, 2000). It discusses two speci…
Glass transitions of freely suspended polymer films
Pierre-Gilles de Gennes
We present a modified version of our "sliding model", where chain arcs, between two contacts at the surface, may move if all the barriers along the arc are weaker than a certain th…