Droplet behavior on flat and textured surfaces: Co-occurrence of Deegan outward flow with Marangoni solute instability

Edward Bormashenko, Yelena Bormashenko, Roman Pogreb, Oleg Stanevsky, Gene Whyman

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

It is demonstrated experimentally that the solution droplet behavior is governed by the co-occurrence of outward hydrodynamic and surface tension (solute Marangoni) induced flows. Potassium ferrocyanide allows the effective visualization of the processes taking place in the droplet. Wetting properties of the substrate govern the shape evolution of the evaporated droplet. Quantitative estimation of the wetting properties of textured polymer surface is presented.

Original languageEnglish
Pages (from-to)128-132
Number of pages5
JournalJournal of Colloid and Interface Science
Volume306
Issue number1
DOIs
StatePublished - 1 Feb 2007

Keywords

  • Deposit
  • Droplet
  • Outward flow
  • Potassium ferrocyanide
  • Surface tension induced flow
  • Textured surface

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