Condensation of helium in nanoscopic alkali wedges at zero temperature (Articolo in rivista)

Type
Label
  • Condensation of helium in nanoscopic alkali wedges at zero temperature (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Hernandez, ES; Ancilotto, F; Barranco, M; Mayol, R; Pi, M (2006)
    Condensation of helium in nanoscopic alkali wedges at zero temperature
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Hernandez, ES; Ancilotto, F; Barranco, M; Mayol, R; Pi, M (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 73 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, RA-1428 Buenos Aires, DF, Argentina; Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina; Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy; DEMOCRITOS Natl Simulat Ctr, Trieste, Italy; Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain (literal)
Titolo
  • Condensation of helium in nanoscopic alkali wedges at zero temperature (literal)
Abstract
  • We present a complete calculation of the structure of liquid He-4 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 He-4 on cesium is also proposed. (literal)
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