Formation and mobility of droplets on composite layered substrates

A. Yochelis, E. Knobloch, L. M. Pismen

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

A mesoscale fluid film placed on a solid support may break up and form droplets. In addition, droplets may exhibit spontaneous translation by modifying the wetting properties of the substrate, resulting in asymmetry in the contact angles. We examine mechanisms for droplet formation and motion on uniform and terraced landscapes, i.e., composite substrates. The fluid film stability, droplet formation and velocity are studied theoretically in the isothermal case using a lubrication approach in one spatial dimension. The droplet properties are found to involve contributions from both the terraced layer thickness and molecular interactions via the disjoining potential.

Original languageEnglish
Pages (from-to)41-49
Number of pages9
JournalEuropean Physical Journal E
Volume22
Issue number1
DOIs
StatePublished - 1 Jan 2007
Externally publishedYes

ASJC Scopus subject areas

  • Biotechnology
  • Biophysics
  • Chemistry (all)
  • Materials Science (all)
  • Surfaces and Interfaces

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