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Surface-Tension-Driven Flow Due to the Adsorption and Desorption of Colloidal Particles

✍ Scribed by Kenneth Casson; Duane Johnson

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
208 KB
Volume
242
Category
Article
ISSN
0021-9797

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✦ Synopsis

When a dilute colloidal suspension of 50-Β΅m polyamide particles is exposed to a deformable interface, spontaneous flow occurs. This flow is orderly, reproducible, and shows a proportional dependence on particle concentration. The same type of flow was also observed in a silicon oil suspension. Placing a glass plate on the interface dampens the flow, eventually extinguishing it completely. Upon removing the plate, the flow resumes. This leads to the belief that a new surface effect is being observed and may be important in a number of industrial applications where a free interface of a colloidal suspension is present.

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