Phys. Rev. Lett. 60, 2705–2708 (1988)Long-Time Self-Diffusion in Concentrated Colloidal DispersionsReceived 16 November 1987; published in the issue dated 27 June 1988 A theory of self-diffusion in concentrated dispersions is presented, in which the effects of hydrodynamic and direct interactions between macroparticles are virtually decoupled. The long-time self-diffusion coefficient DsL is written in terms of the radial distribution function of the suspended particles and of their short-time self-diffusion coefficient DsS. The predictions for the volume fraction dependence of DsL in hard-sphere suspensions are in excellent agreement with available experimental results. © 1988 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.60.2705
DOI:
10.1103/PhysRevLett.60.2705
PACS:
05.40.+j, 05.70.Ln, 47.15.Pn, 51.20.+d
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