Linear Viscoelasticity of Colloidal Hard Sphere Suspensions near the Glass TransitionPhysical Review Letters, Vol. 75, No. 14. (2 October 1995), 2770.
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AbstractThe frequency-dependent viscoelastic shear modulus of concentrated suspensions of colloidal hard spheres is shown to be strongly modified as the volume fraction approaches the glass transition. The elastic or storage component; G ′ ; becomes larger than the viscous or loss component; G ′′ . The frequency dependence of G ′ develops a plateau while that of G ′′ develops a minimum. We propose a physical model to account for these data; using a description of the glasslike behavior based on mode-coupling theory; and a description of the high-frequency behavior based on hydrodynamic flow calculations.
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