Modelling unidirectional liquid spreading on slanted microposts

Andrea Cavalli, Matthew L. Blow, Julia M. Yeomans

    Research output: Contribution to journalJournal articleResearchpeer-review


    A lattice Boltzmann algorithm is used to simulate the slow spreading of drops on a surface patterned with slanted micro-posts. Gibb's pinning of the interface on the sides or top of the posts leads to unidirectional spreading over a wide range of contact angles and inclination angles of the posts. Regimes for spreading in no, one or two directions are identified, and shown to agree well with a two-dimensional theory proposed in Chu, Xiao and Wang. A more detailed numerical analysis of the contact line shapes allows us to understand deviations from the two dimensional model, and to identify the shapes of the pinned interfaces. © 2013 The Royal Society of Chemistry.
    Original languageEnglish
    JournalSoft Matter
    Issue number29
    Pages (from-to)6862-6866
    Publication statusPublished - 2013


    • Chemistry
    • Materials science
    • Two dimensional

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