Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/3588
Título: Capillary bridging and long-range attractive forces in a mean-field approach
Autor: Andrienko, D.
Patrício, Pedro
Vinogradova, O. I.
Palavras-chave: Hydrophobic surfaces
Electrolyte solutions
Optical cavitation
Nonwetting liquid
Data: 1-Set-2004
Editora: Amer Inst Physics
Citação: ANDRIENKO, D.; PATRICIO, P.; VINOGRADOVA, O.I. - Capillary bridging and long-range attractive forces in a mean-field approach. Journal of Chemical Physics. ISSN 0021-9606. Vol. 121, nr 9 (2004), p. 4414-4423.
Resumo: When a mixture is confined, one of the phases can condense out. This condensate, which is otherwise metastable in the bulk, is stabilized by the presence of surfaces. In a sphere-plane geometry, routinely used in atomic force microscope and surface force apparatus, it, can form a bridge connecting the surfaces. The pressure drop in the bridge gives rise to additional long-range attractive forces between them. By minimizing the free energy of a binary mixture we obtain the force-distance curves as well as the structural phase diagram of the configuration with the bridge. Numerical results predict a discontinuous transition between the states with and without the bridge and linear force-distance curves with hysteresis. We also show that similar phenomenon can be observed in a number of different systems, e.g., liquid crystals and polymer mixtures. (C). 2004 American Institute of Physics.
Peer review: yes
URI: http://hdl.handle.net/10400.21/3588
ISSN: 0021-9606
Versão do Editor: http://scitation.aip.org/content/aip/journal/jcp/121/9/10.1063/1.1778154
Aparece nas colecções:ISEL - Física - Artigos

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