Filling transitions on rough surfaces: Inadequacy of Gaussian surface models

Renaud Dufour, Ciro Semprebon, Stephan Herminghaus

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We present numerical studies of wetting on various topographic substrates, including random topographies. We find good agreement with recent predictions based on an analytical interface-displacement-type theory, except that we find critical end points within the physical parameter range. As predicted, Gaussian random surfaces are found to behave qualitatively different from non-Gaussian topographies. This shows that Gaussian random processes as models for rough surfaces must be used with great care, if at all, in the context of wetting phenomena.
Original languageEnglish
Article number032802
JournalPhysical Review E
Issue number3
Publication statusPublished - 17 Mar 2016


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