Effect of contact angle hysteresis on water droplet evaporation from super-hydrophobic surfaces

Small water drops demonstrate different evaporation modes on super-hydrophobic polymer surfaces with different hysteresis of contact angle. While on the high-hysteresis surface evaporation follows the constant-contact-diameter mode, the constant-contact-angle mode dominates on the low-hysteresis sur...

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Bibliographic Details
Published inApplied surface science Vol. 255; no. 7; pp. 4056 - 4060
Main Authors Kulinich, S.A., Farzaneh, M.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.01.2009
Subjects
Evaporation
Super-hydrophobicity
Surface roughness
Wetting hysteresis
Super-hydrophobicity
Wetting hysteresis
Surface roughness
Evaporation
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Summary:Small water drops demonstrate different evaporation modes on super-hydrophobic polymer surfaces with different hysteresis of contact angle. While on the high-hysteresis surface evaporation follows the constant-contact-diameter mode, the constant-contact-angle mode dominates on the low-hysteresis surface. These modes were previously reported for smooth hydrophilic and hydrophobic surfaces, respectively. The experimental data are compared to the previous models describing spherical cap drops that evaporate in different modes, and good fitting is obtained.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2008.10.109