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An experimental study of liquid bridges between spheres in a gravitational field

Authors
Journal
Journal of Colloid and Interface Science
0021-9797
Publisher
Elsevier
Publication Date
Volume
116
Issue
2
Identifiers
DOI: 10.1016/0021-9797(87)90146-9

Abstract

Abstract The properties of liquid bridges between two vertical solid spheres are investigated in a gravitational field. The findings in the preceding theoretical study are verified for the case of zero contact angle. The parameters that are investigated are the capillary force and the sphere separation at different bridge volumes and sphere sizes. The experiments with a sphere and a flat plate give the maximum amount of capillary attraction and sphere—plate separation compared to pairs of spheres. The systems that show contact angle hysteresis are investigated qualitatively. The rupture of liquid bridges is photographed by a motor-driven camera to elucidate this poorly understood phenomenon. It is found that the partitioning of the liquid bridge between top and bottom spheres is influenced by the viscosity of the bridge liquid in addition to the interfacial properties of the system.

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