Droplet spreading and pinning on heterogeneous substrates

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Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2012
Major/Subject
Mcode
Degree programme
Language
en
Pages
011607/1-6
Series
Physical Review E, Volume 86, Issue 1
Abstract
The contact angle of a fluid droplet on an heterogeneous surface is analyzed using the statistical dynamics of the spreading contact line. The statistical properties of the final droplet radius and contact angle are obtained through applications of depinning transitions of contact lines with nonlocal elasticity and features of pinning-depinning dynamics. Such properties not only depend on disorder strength and surface details, but also on the droplet volume and disorder correlation length. Deviations from Wenzel or Cassie-Baxter behavior are particularly apparent in the case of small droplet volumes and small contact angles.
Description
Keywords
fluid droplet spreading, pinning, heterogeneous substrates
Other note
Citation
Alava, Mikko J. & Dubé, Martin. 2012. Droplet spreading and pinning on heterogeneous substrates. Physical Review E. Volume 86, Issue 1. 011607/1-6. ISSN 1539-3755 (printed). DOI: 10.1103/physreve.86.011607.