Energetics, Surface Tension, and Prewetting Jump of Superfluid 4He Films Adsorbed on Planar Substrates

The energetics of superfluid films of 4He adsorbed on planar substrates is studied. For this purpose, the energy per particle of the systems e is expressed as a polynomial expansion in powers of the inverse of coverage. The surface energy σA and the chemical potential μ, defined according to basic e...

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Autor principal: Szybisz, L.
Formato: JOUR
Materias:
Adsorption
Films
Tensile stress
Thermodynamics
Wetting
Prewetting jumps
Superfluid films
Superfluid helium
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00222291_v116_n3-4_p215_Szybisz
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00222291_v116_n3-4_p215_Szybisz2023-10-03T14:28:32Z Energetics, Surface Tension, and Prewetting Jump of Superfluid 4He Films Adsorbed on Planar Substrates Szybisz, L. Adsorption Films Tensile stress Thermodynamics Wetting Prewetting jumps Superfluid films Superfluid helium The energetics of superfluid films of 4He adsorbed on planar substrates is studied. For this purpose, the energy per particle of the systems e is expressed as a polynomial expansion in powers of the inverse of coverage. The surface energy σA and the chemical potential μ, defined according to basic equations of thermodynamics, are written in terms of the proposed expansion. From the expression derived for the third-sound velocity c3 it is possible to estimate the prewetting jump. This formalism is applied for analyzing films adsorbed on alkali metal and H2 surfaces. For all the examined substrates the determined energy per particle in the limit of films with infinite width, e∞, is in agreement with the value for bulk liquid 4He. The surface tensions and prewetting jumps obtained in the present work are compared with results of previous studies. Fil:Szybisz, L. 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_00222291_v116_n3-4_p215_Szybisz
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Adsorption
Films
Tensile stress
Thermodynamics
Wetting
Prewetting jumps
Superfluid films
Superfluid helium
spellingShingle Adsorption
Films
Tensile stress
Thermodynamics
Wetting
Prewetting jumps
Superfluid films
Superfluid helium
Szybisz, L.
Energetics, Surface Tension, and Prewetting Jump of Superfluid 4He Films Adsorbed on Planar Substrates
topic_facet Adsorption
Films
Tensile stress
Thermodynamics
Wetting
Prewetting jumps
Superfluid films
Superfluid helium
description The energetics of superfluid films of 4He adsorbed on planar substrates is studied. For this purpose, the energy per particle of the systems e is expressed as a polynomial expansion in powers of the inverse of coverage. The surface energy σA and the chemical potential μ, defined according to basic equations of thermodynamics, are written in terms of the proposed expansion. From the expression derived for the third-sound velocity c3 it is possible to estimate the prewetting jump. This formalism is applied for analyzing films adsorbed on alkali metal and H2 surfaces. For all the examined substrates the determined energy per particle in the limit of films with infinite width, e∞, is in agreement with the value for bulk liquid 4He. The surface tensions and prewetting jumps obtained in the present work are compared with results of previous studies.
format JOUR
author Szybisz, L.
author_facet Szybisz, L.
author_sort Szybisz, L.
title Energetics, Surface Tension, and Prewetting Jump of Superfluid 4He Films Adsorbed on Planar Substrates
title_short Energetics, Surface Tension, and Prewetting Jump of Superfluid 4He Films Adsorbed on Planar Substrates
title_full Energetics, Surface Tension, and Prewetting Jump of Superfluid 4He Films Adsorbed on Planar Substrates
title_fullStr Energetics, Surface Tension, and Prewetting Jump of Superfluid 4He Films Adsorbed on Planar Substrates
title_full_unstemmed Energetics, Surface Tension, and Prewetting Jump of Superfluid 4He Films Adsorbed on Planar Substrates
title_sort energetics, surface tension, and prewetting jump of superfluid 4he films adsorbed on planar substrates
url http://hdl.handle.net/20.500.12110/paper_00222291_v116_n3-4_p215_Szybisz
work_keys_str_mv AT szybiszl energeticssurfacetensionandprewettingjumpofsuperfluid4hefilmsadsorbedonplanarsubstrates
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