Surface term for the capillary condensation transitions in a slit geometry

Details Surface term for the capillary condensation transitions in a slit geometry Surface term for the capillary condensation transitions in a slit geometry

2006-09-06

arxiv.org/abs/cond-mat/0609136v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 1 table and 5 figures

Scientific paper

10.1103/PhysRevB.74.172510

It is shown that a bare simple fluid model (SFM) proposed some years ago for studying adsorption between two semi-infinite solid walls can be improved by modifying the surface term in the grand potential for the film phase. Such a correction substantially improves the agreement between the predictions for phase transitions provided by that SFM and results obtained from calculations carried out for $^4$He with the density-functional method at zero temperature. The corrective term depends on the strength of the adsorption potential and observables of bulk helium.

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