Evaporation of Liquids and Solutions in Confined Geometry
- 29 June 2004
- journal article
- Published by American Chemical Society (ACS) in Langmuir
- Vol. 20 (16) , 6538-6541
- https://doi.org/10.1021/la0495534
Abstract
We describe a drying setup where a liquid droplet is confined between two circular glass plates and allowed to evaporate. Optical imaging of the shrinking droplet provides the temporal evolution of the solvent volume. For a pure liquid, we measure the diffusion coefficient of the evaporating gas with a good accuracy. For a solution, the slowing down of evaporation by progessive concentration of the solute yields a direct measurement of the solvent activity.Keywords
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