Gravity-induced encapsulation of liquids by destabilization of granular rafts

Manouk Abkarian, Suzie Protière, Jeffrey M. Aristoff, Howard A. Stone

Research output: Contribution to journalArticle

46 Scopus citations

Abstract

Droplets and bubbles coated by a protective armour of particles find numerous applications in encapsulation, stabilization of emulsions and foams, and flotation techniques. Here we study the role of a body force, such as in flotation, as a means of continuous encapsulation by particles. We use dense particles, which self-assemble into rafts, at oil-water interfaces. We show that these rafts can be spontaneously or controllably destabilized into armoured oil-in-water droplets, which highlights a possible role for common granular materials in environmental remediation. We further present a method for continuous production and discuss the generalization of our approach towards colloidal scales.

Original languageEnglish (US)
Article number1895
JournalNature communications
Volume4
DOIs
StatePublished - 2013

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

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