Colloidal interaction between a rigid solid and a fluid drop

Miklavcic, S. J., Horn, R. G. and Bachmann, D. J. 1995, Colloidal interaction between a rigid solid and a fluid drop, Journal of physical chemistry, vol. 99, no. 44, pp. 16357-16364.

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Title Colloidal interaction between a rigid solid and a fluid drop
Author(s) Miklavcic, S. J.
Horn, R. G.
Bachmann, D. J.
Journal name Journal of physical chemistry
Volume number 99
Issue number 44
Start page 16357
End page 16364
Total pages 8
Publisher American Chemical Society
Place of publication Washington, D.C.
Publication date 1995-11
ISSN 0022-3654
Keyword(s) colloidal interaction
rigid solid
fluid drop
Summary We present results of a theoretical study of the effect of surface deformation on a macroscopic system composed of a solid surface interacting with a fluid drop through electrostatic double-layer forces. The analysis involves numerically solving a Laplace equation suitably modified to describe the shape of a liquid drop subjected to a repulsive double-layer force. The latter is evaluated in nonlinear mean-field theory. Some analytical results are also given. The results indicate that although deformation need not be significant on the macroscopic scale, its effect on the interaction is significant and modifies the picture usually presented in DLVO theory. The decay length of the exponential repulsion deviates marginally from the Debye length, dependent on the interfacial tension of the drop. More significantly, at separations where the double-layer force becomes comparable to the internal pressure of the drop, the net force between the two bodies, the local radius of curvature of the drop, and the amount of deformation grow abruptly. The results of this work are relevant to emulsion stability, micelle, vesicle, and cell interactions, and recent experiments on bubble-particle interaction.
Language eng
Field of Research 029999 Physical Sciences not elsewhere classified
Socio Economic Objective 970102 Expanding Knowledge in the Physical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©1995, American Chemical Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30041480

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