Filling transitions on rough surfaces: Inadequacy of Gaussian surface models

Dufour, Renaud, Semprebon, Ciro and Herminghaus, Stephan (2016) Filling transitions on rough surfaces: Inadequacy of Gaussian surface models. Physical Review E, 93 (3). ISSN 2470-0045

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Abstract

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.

Item Type:	Article
Subjects:	F300 Physics G100 Mathematics
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Paul Burns
Date Deposited:	22 May 2018 13:48
Last Modified:	11 Oct 2019 20:15
URI:	http://nrl.northumbria.ac.uk/id/eprint/34317

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