Abstract
In this paper we present the preliminary results on the de-pinning phenomenon of wetting volatile drops. Wetting properties are analysed by measuring the drop base and the dynamic apparent contact angle. Three cases are investigated: reduced pressure environment, controlled substrate temperature and surfactants solutions. The experimental results are compared to the existing theories to interpret the de-pinning phenomenon. The Young unbalanced force acting through surface tension near the triple line seems to be the controlling mechanism behind the de-pinning phenomenon of evaporating drops. (c) 2005 Elsevier Ltd. All rights reserved.
Original language | English |
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Pages (from-to) | 482-490 |
Number of pages | 9 |
Journal | International Communications in Heat and Mass Transfer |
Volume | 33 |
Issue number | 4 |
DOIs | |
Publication status | Published - Apr 2006 |
Keywords / Materials (for Non-textual outputs)
- evaporation, wetting
- drops
- contact line, de-pinning, equilibrium
- CONTACT-ANGLE
- EVAPORATION
- HYSTERESIS
- SESSILE
- AIR