Capillary condensation transitions in a slab geometry
A simple model, previously used to explore wetting transitions, is evaluated for the case of a slab geometry in which adsorption occurs between two semi-infinite solids, with parallel faces separated by a distance L. The model yields a universal description of possible wetting and capillary condensa...
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1999
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paper:paper_1063651X_v59_n4_p4484_Gatica2023-06-08T16:03:43Z Capillary condensation transitions in a slab geometry Gatica, Silvina María Calbi, María de las Mercedes A simple model, previously used to explore wetting transitions, is evaluated for the case of a slab geometry in which adsorption occurs between two semi-infinite solids, with parallel faces separated by a distance L. The model yields a universal description of possible wetting and capillary condensation (CC) transitions. The system’s thermodynamic behavior is predicted from the values of two dimensionless parameters: [Formula Presented] (the reduced gas-surface interaction strength, a function of temperature) and [Formula Presented] (the reduced separation). If [Formula Presented] negligible adsorption occurs at all pressures below saturated vapor pressure (SVP). For somewhat larger values of [Formula Presented] CC occurs for sufficiently small [Formula Presented] close to SVP. For very large values of [Formula Presented] an additional prewetting transition (formation of a film) is predicted for large [Formula Presented] this is accompanied by a CC transition close to SVP. The model is generally consistent with limited results of density-functional calculations for the He liquids at zero temperature. © 1999 The American Physical Society. Fil:Gatica, S.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Calbi, M.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1999 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1063651X_v59_n4_p4484_Gatica http://hdl.handle.net/20.500.12110/paper_1063651X_v59_n4_p4484_Gatica |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
description |
A simple model, previously used to explore wetting transitions, is evaluated for the case of a slab geometry in which adsorption occurs between two semi-infinite solids, with parallel faces separated by a distance L. The model yields a universal description of possible wetting and capillary condensation (CC) transitions. The system’s thermodynamic behavior is predicted from the values of two dimensionless parameters: [Formula Presented] (the reduced gas-surface interaction strength, a function of temperature) and [Formula Presented] (the reduced separation). If [Formula Presented] negligible adsorption occurs at all pressures below saturated vapor pressure (SVP). For somewhat larger values of [Formula Presented] CC occurs for sufficiently small [Formula Presented] close to SVP. For very large values of [Formula Presented] an additional prewetting transition (formation of a film) is predicted for large [Formula Presented] this is accompanied by a CC transition close to SVP. The model is generally consistent with limited results of density-functional calculations for the He liquids at zero temperature. © 1999 The American Physical Society. |
author |
Gatica, Silvina María Calbi, María de las Mercedes |
spellingShingle |
Gatica, Silvina María Calbi, María de las Mercedes Capillary condensation transitions in a slab geometry |
author_facet |
Gatica, Silvina María Calbi, María de las Mercedes |
author_sort |
Gatica, Silvina María |
title |
Capillary condensation transitions in a slab geometry |
title_short |
Capillary condensation transitions in a slab geometry |
title_full |
Capillary condensation transitions in a slab geometry |
title_fullStr |
Capillary condensation transitions in a slab geometry |
title_full_unstemmed |
Capillary condensation transitions in a slab geometry |
title_sort |
capillary condensation transitions in a slab geometry |
publishDate |
1999 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1063651X_v59_n4_p4484_Gatica http://hdl.handle.net/20.500.12110/paper_1063651X_v59_n4_p4484_Gatica |
work_keys_str_mv |
AT gaticasilvinamaria capillarycondensationtransitionsinaslabgeometry AT calbimariadelasmercedes capillarycondensationtransitionsinaslabgeometry |
_version_ |
1768541716037500928 |