Helium on planar and nanostructured alkali-metal surfaces

Autores
Ancilotto, F.; Barranco, M.; Hernandez, Ester Susana; Hernando, A.; Pi, M.
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We investigate the effects (on the wetting characteristics of helium below 3 K) of tailoring an alkali-metal surface by incorporating a regular array of nanoscopic indentations. We establish the prewetting line of helium on semi-infinite planar Cs up to 3 K in the frame of a finite-range temperature-dependent density-functional theory, and examine the modifications introduced in the isotherms when the substrate is covered with a periodic lattice of parabolic cavities. We show that, both for the planar and nanostructured surfaces, the unstable regions of the isotherms are stabilized by nucleation of drops and/or bubbles. Results corresponding to nonwettable Cs surfaces are compared with those obtained both for planar and nanopatterned Na substrates, where wetting at zero temperature is instead expected to occur, for a planar surface, preceded by a first-order prewetting transition. © 2009 The American Physical Society.
Fil: Ancilotto, F.. Università di Padova; Italia
Fil: Barranco, M.. Universidad de Barcelona; España
Fil: Hernandez, Ester Susana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Hernando, A.. Universidad de Barcelona; España
Fil: Pi, M.. Universidad de Barcelona; España
Materia
Helium
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/60462
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Helium on planar and nanostructured alkali-metal surfacesAncilotto, F.Barranco, M.Hernandez, Ester SusanaHernando, A.Pi, M.Heliumhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We investigate the effects (on the wetting characteristics of helium below 3 K) of tailoring an alkali-metal surface by incorporating a regular array of nanoscopic indentations. We establish the prewetting line of helium on semi-infinite planar Cs up to 3 K in the frame of a finite-range temperature-dependent density-functional theory, and examine the modifications introduced in the isotherms when the substrate is covered with a periodic lattice of parabolic cavities. We show that, both for the planar and nanostructured surfaces, the unstable regions of the isotherms are stabilized by nucleation of drops and/or bubbles. Results corresponding to nonwettable Cs surfaces are compared with those obtained both for planar and nanopatterned Na substrates, where wetting at zero temperature is instead expected to occur, for a planar surface, preceded by a first-order prewetting transition. © 2009 The American Physical Society.Fil: Ancilotto, F.. Università di Padova; ItaliaFil: Barranco, M.. Universidad de Barcelona; EspañaFil: Hernandez, Ester Susana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Hernando, A.. Universidad de Barcelona; EspañaFil: Pi, M.. Universidad de Barcelona; EspañaAmerican Physical Society2009-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/60462Ancilotto, F.; Barranco, M.; Hernandez, Ester Susana; Hernando, A.; Pi, M.; Helium on planar and nanostructured alkali-metal surfaces; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 79; 10; 12-2009; 1045141-104514111098-0121CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.79.104514info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:14:52Zoai:ri.conicet.gov.ar:11336/60462instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:14:52.362CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Helium on planar and nanostructured alkali-metal surfaces
title Helium on planar and nanostructured alkali-metal surfaces
spellingShingle Helium on planar and nanostructured alkali-metal surfaces
Ancilotto, F.
Helium
title_short Helium on planar and nanostructured alkali-metal surfaces
title_full Helium on planar and nanostructured alkali-metal surfaces
title_fullStr Helium on planar and nanostructured alkali-metal surfaces
title_full_unstemmed Helium on planar and nanostructured alkali-metal surfaces
title_sort Helium on planar and nanostructured alkali-metal surfaces
dc.creator.none.fl_str_mv Ancilotto, F.
Barranco, M.
Hernandez, Ester Susana
Hernando, A.
Pi, M.
author Ancilotto, F.
author_facet Ancilotto, F.
Barranco, M.
Hernandez, Ester Susana
Hernando, A.
Pi, M.
author_role author
author2 Barranco, M.
Hernandez, Ester Susana
Hernando, A.
Pi, M.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Helium
topic Helium
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We investigate the effects (on the wetting characteristics of helium below 3 K) of tailoring an alkali-metal surface by incorporating a regular array of nanoscopic indentations. We establish the prewetting line of helium on semi-infinite planar Cs up to 3 K in the frame of a finite-range temperature-dependent density-functional theory, and examine the modifications introduced in the isotherms when the substrate is covered with a periodic lattice of parabolic cavities. We show that, both for the planar and nanostructured surfaces, the unstable regions of the isotherms are stabilized by nucleation of drops and/or bubbles. Results corresponding to nonwettable Cs surfaces are compared with those obtained both for planar and nanopatterned Na substrates, where wetting at zero temperature is instead expected to occur, for a planar surface, preceded by a first-order prewetting transition. © 2009 The American Physical Society.
Fil: Ancilotto, F.. Università di Padova; Italia
Fil: Barranco, M.. Universidad de Barcelona; España
Fil: Hernandez, Ester Susana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Hernando, A.. Universidad de Barcelona; España
Fil: Pi, M.. Universidad de Barcelona; España
description We investigate the effects (on the wetting characteristics of helium below 3 K) of tailoring an alkali-metal surface by incorporating a regular array of nanoscopic indentations. We establish the prewetting line of helium on semi-infinite planar Cs up to 3 K in the frame of a finite-range temperature-dependent density-functional theory, and examine the modifications introduced in the isotherms when the substrate is covered with a periodic lattice of parabolic cavities. We show that, both for the planar and nanostructured surfaces, the unstable regions of the isotherms are stabilized by nucleation of drops and/or bubbles. Results corresponding to nonwettable Cs surfaces are compared with those obtained both for planar and nanopatterned Na substrates, where wetting at zero temperature is instead expected to occur, for a planar surface, preceded by a first-order prewetting transition. © 2009 The American Physical Society.
publishDate 2009
dc.date.none.fl_str_mv 2009-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/60462
Ancilotto, F.; Barranco, M.; Hernandez, Ester Susana; Hernando, A.; Pi, M.; Helium on planar and nanostructured alkali-metal surfaces; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 79; 10; 12-2009; 1045141-10451411
1098-0121
CONICET Digital
CONICET
url http://hdl.handle.net/11336/60462
identifier_str_mv Ancilotto, F.; Barranco, M.; Hernandez, Ester Susana; Hernando, A.; Pi, M.; Helium on planar and nanostructured alkali-metal surfaces; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 79; 10; 12-2009; 1045141-10451411
1098-0121
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.79.104514
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.993085

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