Insoluble surfactant spreading along thin liquid films confined by chemical surface patters

D.K.N. Sinz, M. Hanyak, J.C.H. Zeegers, A.A. Darhuber

Research output: Contribution to journalArticleAcademicpeer-review

16 Citations (Scopus)
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Abstract

We conducted a combined experimental and numerical study of the spreading of insoluble surfactants on spatially confined thin liquid films. We found that the spreading dynamics can locally be represented by a power-law relation x B ta. We determine the time evolution of the liquid film thickness and the corresponding spreading exponents a both from experiments using interference microscopy and numerical finite element simulations. The lateral confinement induces non-uniform height- and surface velocity profiles, which manifest themselves in a pronounced transition of the evolving rivulet morphology. Excellent agreement between experimental and simulation results has been achieved.
Original languageEnglish
Pages (from-to)9768-9777
JournalPhysical Chemistry Chemical Physics
Volume13
Issue number20
DOIs
Publication statusPublished - 2011

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