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Lateral capillary forces between colloidal particles incorporated in liquid films or lipid bilayers

  • P. A. Kralchevsky
  • C. D. Dushkin
  • V. N. Paunov
  • N. D. Denkov
  • K. Nagayama
Interactions And Long-Range Order
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 98)

Abstract

The lateral capillary force appears between particles protruding from a liquid film and its physical origin is the overlap of the menisci formed around the separate particles. In turn, the size and shape of a separate meniscus is determined by the wetting properties of the particle surface, i.e., by the intermolecular forces. Therefore, the lateral capillary interaction is operative between particles of size from 1 mm down to 10 nm. Here, we first report data for direct measurement of capillary forces between particles of millimeter and submillimeter size by means of a torsional balance. Next, we present theoretical calculationsd of the capillary interaction between much smaller particles confined in spherical thin liquid films (vesicles, liposomes, etc.). As a result, we obtain a strong interparticle attraction, which can bring about aggregation and ordering of the particles in consonance with the experimental observations.

Key words

Capillary forces interaction between floating particles particle aggregation Pickering emulsions two-dimensional crystallization 

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Copyright information

© Dr. Dietrich Steinkopff Verlag GmbH & Co. KG 1995

Authors and Affiliations

  • P. A. Kralchevsky
    • 1
  • C. D. Dushkin
    • 1
  • V. N. Paunov
    • 1
  • N. D. Denkov
    • 1
  • K. Nagayama
    • 2
  1. 1.Laboratory of Thermodynamics and Physicochemical HydrodynamicsUniversity of Sofia Faculty of ChemistrySofiaBulgaria
  2. 2.Protein Array Project Program ERATO Research and DevelopmentCorporation of JapanTsukubaJapan

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