Drainage of single Plateau borders: Direct observation of rigid and mobile interfaces

Stephan A. Koehler, Sascha Hilgenfeldt, Eric R. Weeks, Howard A. Stone

Research output: Contribution to journalArticleAcademicpeer-review

112 Citations (Scopus)
245 Downloads (Pure)


Foam drainage varies with surfactant. We present direct measurements of the flow velocity profiles across single Plateau borders, which make up the interconnected channel-like network for liquid flow. For protein foams the interface is rigid, whereas small-surfactant foams show significant interfacial mobility. The results agree with a model that takes into account the shearing of the liquid-gas interface transverse to the flow direction. A significant consequence is that bubble size and liquid volume fraction in a foam affect the relative importance of surface rheology on the drainage behavior.
Original languageEnglish
Article number040601(R)
Number of pages4
JournalPhysical review E: Statistical physics, plasmas, fluids, and related interdisciplinary topics
Issue number4
Publication statusPublished - 2002


  • IR-44338
  • METIS-208930


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