Wetting of Crystalline Solids by Associating Fluids

Borówko, M.; Zagórski, R.; Sokołowski, S.

doi:10.1006/jcis.2000.6743

Cited by 2 publications

(2 citation statements)

References 40 publications

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“…Therefore, it is not possible to compare the results with any experimental data. However, it might be of interest to study the wetting behaviour of associating mixtures [20,65], which are known to often exhibit closed immiscibility loops [66].…”

Section: Discussionmentioning

confidence: 99%

Non-additive symmetric mixtures at selective walls

Patrykiejew¹

2018

Condens. Matter Phys.

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The results of Monte Carlo simulation of adsorption and wetting behaviour of a highly non-additive symmetric mixture at selective walls is discussed. We have concentrated on the interplay between the surface induced demixing in the adsorbed films and the properties of the bulk mixture, which exhibits a closed immiscibility loop. It has been shown that the wetting behaviour depends on the absolute values of the parameters determining the strengths of interaction between the mixture components and the surface, as well as on their difference. In general, an increase of the difference between the adsorption energies of the components leads to a decrease of the wetting temperature. In the cases when the wetting of non-selective walls occurs at the temperatures above the onset of demixing transition in the bulk, an increasing wall selectivity leads to a gradual decrease of the wetting temperature towards the triple point, in which the vapour coexists with the mixed and demixed liquid phases. When the wetting temperature at the non-selective wall is located below the onset of the demixing transition in the bulk mixture, an increase of the adsorption energy of the selected component causes the developing adsorbed films to demix and to show the reentrant mixing upon approaching the bulk coexistence. At the temperatures above the onset of the demixing transition in the bulk, the adsorbed films remain demixed up to the bulk coexistence and undergo the first-order wetting transition. A rather unexpected finding has been the observation of a gradual increase of the wetting temperature at highly selective walls.

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Section: Discussionmentioning

confidence: 99%

Non-additive symmetric mixtures at selective walls

Patrykiejew¹

2018

Condens. Matter Phys.

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“…Borówko et al used MC simulations in the isothermal-isobaric ensemble and report a prewetting transition in their study of associating fluids. 32 Shi et al employ the multiple-histogram reweighting technique to study phase transitions in confined fluids like capillary condensation, prewetting, and layering transitions for different systems and in particular for Ar on solid CO 2 . 33 Layering transitions have also been investigated by Malo et al for a graphitic model substrate.…”

Section: Introductionmentioning

confidence: 99%

Aspects of prewetting at nonplanar surfaces

Bohlen

Schoen

2004

The Journal of Chemical Physics

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We employ Monte Carlo simulations in the grand canonical ensemble (GCEMC) to investigate the impact of nonplanarity of a solid substrate on the locus of the prewetting phase transition. The substrate is modelled as a periodic sequence of furrows of depth D and periodicity sx in the x direction; the furrows are infinitely long in the y direction. Our results indicate that a necessary prerequisite for a prewetting transition is the formation of a(n approximately) planar interface between molecularly thin films and an adjacent (bulk) gas. Thus, in general the prewetting transition is shifted to larger chemical potentials because the formation of a planar film-gas interface is more difficult next to a nonplanar compared with a planar solid surface. However, this shift turns out to be nonmonotonic depending on D on account of subtle packing effects manifested in the deviation of the local density Deltarho(x,Deltaz;D) at the nonplanar solid surface from that at a planar substrate. If D becomes sufficiently large prewetting as a discontinuous phase transition is suppressed because inside the furrow a highly ordered film forms that prevents a planar film-gas interface from forming.

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Wetting of Crystalline Solids by Associating Fluids

Cited by 2 publications

References 40 publications

Non-additive symmetric mixtures at selective walls

Non-additive symmetric mixtures at selective walls

Aspects of prewetting at nonplanar surfaces

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