Crystallization Kinetics of Colloidal Spheres under Stationary Shear Flow

Holmqvist, P.; Lettinga, M. P.; Dhont, J. K. G.; Buitenhuis, J.

doi:10.1021/la051490h

Journal Article

PreJuSER-52269

Crystallization Kinetics of Colloidal Spheres under Stationary Shear Flow

Holmqvist, P.FZJ* ; Lettinga, M. P.FZJ* ; Buitenhuis, J.FZJ* ; Dhont, J. K. G.FZJ*

2005
ACS Publ. Washington, DC

Langmuir 21, 10976 - 10982 (2005) [10.1021/la051490h]

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Please use a persistent id in citations: http://hdl.handle.net/2128/1208 doi:10.1021/la051490h

Abstract: A systematic experimental study of dispersions of charged colloidal spheres is presented on the effect of steady shear flow on nucleation and crystal growth rates. In addition, the nonequilibrium phase diagram as it relates to the melting line is measured. Shear flow is found to strongly affect induction times, crystal growth rates, and the location of the melting line. The main findings are that (1) the crystal growth rate for a given concentration exhibits a maximum as a function of the shear rate; (2) contrary to the monotonic increase in the growth rate with increasing concentration in the absence of flow, a maximum of the crystal growth rate as a function of concentration is observed for sheared systems; and (3) the induction time for a given concentration exhibits a maximum as a function of the shear rate. These findings are partly explained on a qualitative level.

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