Liquid Bridge between Two Moving Spheres: An Experimental Study of Viscosity Effects

Olivier Pitois (1) , Pascal Moucheront (2) , Xavier Chateau (3)

1 LPMDI - Laboratoire de Physique des Matériaux Divisés et des Interfaces
2 Physique des milieux poreux
3 Rhéophysique

The effects of viscosity on the mechanical response of a liquid bridge are investigated in the case of small amounts of liquid axially strained between two moving spheres. An experimental setup allows the measurement of capillary and viscous forces exerted on the spheres as a function of the spheres separation distance and the spheres velocity. The experimental results are found to be accurately described over a large range in spheres velocity and liquid viscosity by a simple closed-form expression. In addition, the bridge rupture distance is found to increase like the square root of the separation velocity. C 2000 Academic Press

Mots clés: liquid bridge; viscous force; capillary force

Domaines: Matière Condensée [cond-mat]; Matière Molle [cond-mat.soft]

Olivier Pitois, Pascal Moucheront, Xavier Chateau. Liquid Bridge between Two Moving Spheres: An Experimental Study of Viscosity Effects. Journal of Colloid and Interface Science, 2000, 231 (1), pp.26-31. ⟨10.1006/jcis.2000.7096⟩. ⟨hal-01983073⟩