Citation:
Yatsyshin, P., Parry, A. O., Rascón, C. Kalliadasis, S. (2017). Classical density functional study of wetting transitions on nanopatterned surfaces. Journal of Physics: Condensed Matter, 29(9).
xmlui.dri2xhtml.METS-1.0.item-contributor-funder:
European Commission Ministerio de Economía y Competitividad (España)
Sponsor:
PY is grateful to Dr Miguel A Durán-Olivencia from the Chemical Engineering Department of Imperial College London for numerous stimulating discussions. We acknowledge financial support from the Engineering and Physical Sciences Research Council of the UK through Grants No. EP/L027186 and EP/L020564 and by the European Research Council through Advanced Grant No. 247031. CR also acknowledges the support of the Spanish Ministerio de Economía y Competitividad under grant FIS2015-66523-P.
Project:
info:eu-repo/grantAgreement/ERC/247031 Gobierno de España. FIS2015-66523-P
Keywords:
Classical density functional theory
,
Wetting
,
Phase transitions
,
Nanopatterned surfaces
Even simple fluids on simple substrates can exhibit very rich surface phase behaviour. To illustrate this, we consider fluid adsorption on a planar wall chemically patterned with a deep stripe of a different material. In this system, two phase transitions compEven simple fluids on simple substrates can exhibit very rich surface phase behaviour. To illustrate this, we consider fluid adsorption on a planar wall chemically patterned with a deep stripe of a different material. In this system, two phase transitions compete: unbending and pre-wetting. Using microscopic density-functional theory, we show that, for thin stripes, the lines of these two phase transitions may merge, leading to a new two-dimensional-like wetting transition occurring along the walls. The influence of intermolecular forces and interfacial fluctuations on this phase transition and at complete pre-wetting are considered in detail.[+][-]