The spontancous spreading of viscous liquid drops on solid surfaces, just after deposition, has been studied. Silicone oils (polydimethylsiloxane, PDMS) of two different viscosities were placed on fluorinated silicon wafers, tetrafluoroethylene (Tefion), and glass. The contact angle, height, and con
The Spreading of Hanging Drops
β Scribed by Peter Ehrhard
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 278 KB
- Volume
- 168
- Category
- Article
- ISSN
- 0021-9797
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π SIMILAR VOLUMES
tact angle condition. Greenspan (9) and Greenspan and Spreading of a liquid over a dry smooth solid surface is analyzed McCay (10) calculated the spreading kinetics by assuming in the case of complete wetting, negligible evaporation, and small the common-line speed to be proportional to the differen
Spreading of small liquid drops over thin porous layers saturated with the same liquid is investigated from both theoretical and experimental points of view. A theory is presented that shows that spreading is governed by the same power law as in the case of spreading over a dry solid substrate. The
The spreading dynamics of small polydimethylsiloxane (PDMS) drops was studied on substrates with varying surface energies. For experimental parameters near the wetting transition, we observed small PDMS drops of different drop volumes as a function of time using interference video microscopy. While
A description of the entire configuration of liquid drops spreading over a previously wetted solid surface is given in the case of negligible evaporation and small Bond and Weber numbers. Two solutions are developed: an outer one which is valid in the bulk of the drop and an inner solution which app