Condensation of helium in nanoscopic alkali wedges at zero temperature

We present a complete calculation of the structure of liquid He4 confined to a concave nanoscopic wedge, as a function of the opening angle of the walls. This is achieved within a finite-range density functional formalism. The results here presented, restricted to alkali metal substrates, illustrate...

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Autor principal: Hernández, Ester Susana
Publicado: 2006
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v73_n24_p_Hernandez
http://hdl.handle.net/20.500.12110/paper_10980121_v73_n24_p_Hernandez
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_10980121_v73_n24_p_Hernandez2023-06-08T16:07:33Z Condensation of helium in nanoscopic alkali wedges at zero temperature Hernández, Ester Susana We present a complete calculation of the structure of liquid He4 confined to a concave nanoscopic wedge, as a function of the opening angle of the walls. This is achieved within a finite-range density functional formalism. The results here presented, restricted to alkali metal substrates, illustrate the change in meniscus shape from rather broad to narrow wedges on weak and strong alkali adsorbers, and we relate this change to the wetting behavior of helium on the corresponding planar substrate. As the wedge angle is varied, we find a sequence of stable states that, in the case of cesium, undergo one filling and one emptying transition at large and small openings, respectively. A computationally unambiguous criterion to determine the contact angle of He4 on cesium is also proposed. © 2006 The American Physical Society. Fil:Hernández, E.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2006 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v73_n24_p_Hernandez http://hdl.handle.net/20.500.12110/paper_10980121_v73_n24_p_Hernandez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We present a complete calculation of the structure of liquid He4 confined to a concave nanoscopic wedge, as a function of the opening angle of the walls. This is achieved within a finite-range density functional formalism. The results here presented, restricted to alkali metal substrates, illustrate the change in meniscus shape from rather broad to narrow wedges on weak and strong alkali adsorbers, and we relate this change to the wetting behavior of helium on the corresponding planar substrate. As the wedge angle is varied, we find a sequence of stable states that, in the case of cesium, undergo one filling and one emptying transition at large and small openings, respectively. A computationally unambiguous criterion to determine the contact angle of He4 on cesium is also proposed. © 2006 The American Physical Society.
author Hernández, Ester Susana
spellingShingle Hernández, Ester Susana
Condensation of helium in nanoscopic alkali wedges at zero temperature
author_facet Hernández, Ester Susana
author_sort Hernández, Ester Susana
title Condensation of helium in nanoscopic alkali wedges at zero temperature
title_short Condensation of helium in nanoscopic alkali wedges at zero temperature
title_full Condensation of helium in nanoscopic alkali wedges at zero temperature
title_fullStr Condensation of helium in nanoscopic alkali wedges at zero temperature
title_full_unstemmed Condensation of helium in nanoscopic alkali wedges at zero temperature
title_sort condensation of helium in nanoscopic alkali wedges at zero temperature
publishDate 2006
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v73_n24_p_Hernandez
http://hdl.handle.net/20.500.12110/paper_10980121_v73_n24_p_Hernandez
work_keys_str_mv AT hernandezestersusana condensationofheliuminnanoscopicalkaliwedgesatzerotemperature
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