Capillary condensation transitions in a slab geometry

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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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Autores principales: Gatica, S.M., Calbi, M.M., Cole, M.W.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_1063651X_v59_n4_p4484_Gatica
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_1063651X_v59_n4_p4484_Gatica
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spelling todo:paper_1063651X_v59_n4_p4484_Gatica2023-10-03T16:01:24Z Capillary condensation transitions in a slab geometry Gatica, S.M. Calbi, M.M. Cole, M.W. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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.
format JOUR
author Gatica, S.M.
Calbi, M.M.
Cole, M.W.
spellingShingle Gatica, S.M.
Calbi, M.M.
Cole, M.W.
Capillary condensation transitions in a slab geometry
author_facet Gatica, S.M.
Calbi, M.M.
Cole, M.W.
author_sort Gatica, S.M.
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
url http://hdl.handle.net/20.500.12110/paper_1063651X_v59_n4_p4484_Gatica
work_keys_str_mv AT gaticasm capillarycondensationtransitionsinaslabgeometry
AT calbimm capillarycondensationtransitionsinaslabgeometry
AT colemw capillarycondensationtransitionsinaslabgeometry
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