Phys. Rev. Lett. 82, 1792–1795 (1999)Rheology and Dynamics of Colloidal SuspensionsReceived 19 May 1998; published in the issue dated 22 February 1999 Predictions from a recently developed mode coupling theory (MCT) are compared with experimental results for hard-sphere suspensions. A simple scaling of the MCT results leads to good agreement with the data. The scaled MCT predicts that for hard-sphere suspensions the zero-shear limiting viscosity obeys a generalized Stokes-Einstein (GSE) relation with both the long-time self-diffusion coefficient and the long-time collective diffusion coefficient measured at the peak of the structure factor. MCT suggests that the same GSE relations do not hold for salt-free charge-stabilized suspensions. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.82.1792
DOI:
10.1103/PhysRevLett.82.1792
PACS:
82.70.Dd, 83.50.Fc, 83.85.Jn
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