Double layers and interparticle forces in colloid science and biology: analytic results for the effect of ionic dispersion forces
Date
2004-06-18
Authors
Edwards, Scott
Williams, David
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American Physical Society
Abstract
We study analytically two of the central problems of colloid science: the structure of the double layer
surrounding a charged particle and the forces between two such particles. Traditionally, these have been
understood using a combination of electrostatic forces acting on the ions and the entropy of the same
ions. Here we derive explicit formulas showing how the often dominant dispersion forces between ions
and the surfaces can dramatically change the structure of the double layer and the forces.
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Keywords
Keywords: Electric charge; Electrostatics; Entropy; Interfaces (materials); Ions; Loads (forces); Poisson equation; Polarization; Van der Waals forces; Double layer repulsion; Ionic radii; Power law; Variables; Colloids
Citation
Physical Review Letters 92.24 (2004): 248303/1-4
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Physical Review Letters
Type
Journal article
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