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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Autores principales: Gatica, Silvina María, Calbi, María de las Mercedes
Publicado: 1999
Acceso en línea: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
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id paper:paper_1063651X_v59_n4_p4484_Gatica
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spelling 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
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