Droplet spreading and pinning on heterogeneous substrates

M.J. Alava, M. Dube

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)
111 Downloads (Pure)

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.
Original languageEnglish
Article number011607
Pages (from-to)1-6
JournalPhysical Review E
Volume86
Issue number1
DOIs
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

Keywords

  • droplet spreading

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