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Theory of hydration forces. Nonlocal electrostatic interaction of neutral surfaces

J. Chem. Phys. 92, 6890 (1990); doi:10.1063/1.458276

Issue Date: 1 June 1990 | See: Erratum

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S. Leikin
Physical Sciences Laboratory, Division of Computer Research and Technology, National Institutes of Health, Bldg. 12A, Room 2007 Bethesda, 20892

A. A. Kornyshev
Theoretical Department, The A. N. Frumkin Institute of Electrochemistry, Acad. Sci. USSR, Leninsky Prospect 31, 117071 Moscow, U.S.S.R.
The nonlocal electrostatic contribution to the hydration (structural) repulsion of neutral hydrophilic surfaces separated by thin water layer is considered. This contribution arises from the form of the image–charge interaction of alternating positively and negatively charged polar groups attached to one of the surfaces with nonpolar background of another surface. Characteristic features of this interaction are shown to be determined by the lateral ordering of the polar groups. Similar features were found previously in generalized free-field model of the interaction. Both models are in a good quantitative agreement with the experimental data on lipid membranes, and give consistent physical explanation to observable dependences of amplitude and decay length of the hydration force on the nature and structure of the surfaces. This similarity makes it impossible to distinguish any particular mediator of the hydration force at the present state of the knowledge. At the same time it provides a quite general picture of the role of lateral structure of the surfaces in the hydration force. The Journal of Chemical Physics is copyrighted by The American Institute of Physics.
History: Received 9 January 1990; accepted 12 February 1990
Permalink: http://link.aip.org/link/?JCPSA6/92/6890/1
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ERRATUM

  1. Erratum: Theory of hydration forces. Nonlocal electrostatic interaction of neutral surfaces [J. Chem. Phys. 92, 6890 (1990)]
    S. Leikin et al.
    J. Chem. Phys. 94, 8640 (1991)

KEYWORDS and PACS

Keywords
PACS
  • 82.65.Fr
    Physical chemistry Surface and interface chemistry Film and membrane processes: ion exchange, dialysis, osmosis, electroosmosis
  • 87.22.Bt
    Biophysics, medical physics, and biomedical engineering Physics of cellular and physiological processes Membrane and subcellular physics and structure
  • YEAR: 1990

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PUBLICATION DATA

ISSN:
0021-9606 (print)   1089-7690 (online)
Publisher:
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REFERENCES (40)
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