Capillary evaporation in colloid-polymer mixtures selectively confined to a planar slit

Schmidt, M, Fortini, A and Dijkstra, M (2004) Capillary evaporation in colloid-polymer mixtures selectively confined to a planar slit Journal of Physics Condensed Matter, 16 (38).

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Abstract

Using density functional theory and Monte Carlo simulations we investigate the Asakura-Oosawa-Vrij mixture of hard sphere colloids and non-adsorbing ideal polymers under selective confinement of the colloids to a planar slab geometry. This is a model for confinement of colloid-polymer mixtures by either two parallel walls with a semi-permeable polymer coating or through the use of laser tweezers. We find that such a pore favours the colloidal gas over the colloidal liquid phase and induces capillary evaporation. A treatment based on the Kelvin equation gives a good account of the location of the capillary binodal for large slit widths. The colloid density profile is found to exhibit a minimum (maximum) at contact with the wall for large (small) slit widths.

Item Type:	Article
Divisions :	Surrey research (other units)
Authors :	Name Email ORCID Schmidt, M Fortini, A a.fortini@surrey.ac.uk Dijkstra, M
Date :	29 September 2004
DOI :	10.1088/0953-8984/16/38/029
Depositing User :	Symplectic Elements
Date Deposited :	17 May 2017 13:23
Last Modified :	24 Jan 2020 23:53
URI:	http://epubs.surrey.ac.uk/id/eprint/839053

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