Journal
PHYSICAL REVIEW LETTERS
Volume 84, Issue 4, Pages 785-788Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.84.785
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X-ray photon correlation spectroscopy and small-angle scattering measurements are presented of the dynamics and structure of concentrated suspensions of charge-stabilized polystyrene latex spheres dispersed in glycerol, for volume fractions from 3% to 52%. The static structures of the suspensions show essentially hard-sphere behavior, and the short-time dynamics shows good agreement with predictions for the wave-vector-dependent collective diffusion coefficient, However, the intermediate scattering function is found to violate a scaling behavior found previously for a sterically stabilized hard-sphere suspension [P.N. Segre and P.N. Pusey, Phys. Rev. Lett. 77, 771 (1996)].
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