title: Anisotropic imbibition on surfaces patterned with polygonal posts.
abstract: We present and interpret lattice Boltzmann simulations of thick films spreading on surfaces patterned with polygonal posts. We show that the mechanism of pinning and depinning differs with the direction of advance, and demonstrate that this leads to anisotropic spreading within a certain range of material contact angles.
authors.affiliation: The Rudolf Peierls Centre for Theoretical Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP, UK. matthewlblow@gmail.com
authors.forename: M L
authors.initials: ML
authors.lastname: Blow
authors.forename: J M
authors.initials: JM
authors.lastname: Yeomans