The order-disorder transition in colloidal suspensions under shear flow

Details The order-disorder transition in colloidal suspensions under shear flow The order-disorder transition in colloidal suspensions under shear flow

2007-06-29

arxiv.org/abs/0706.4386v2

J. Phys.: Condens. Matter 20 (2008) 035104 (6pp).

Physics

Condensed Matter

Statistical Mechanics

11 pages, 10 figures, v.2: We have made some small improvements on presentations

Scientific paper

10.1088/0953-8984/20/03/035104

We study the order-disorder transition in colloidal suspensions under shear flow by performing Brownian dynamics simulations. We characterize the transition in terms of a statistical property of time-dependent maximum value of the structure factor. We find that its power spectrum exhibits the power-law behaviour only in the ordered phase. The power-law exponent is approximately -2 at frequencies greater than the magnitude of the shear rate, while the power spectrum exhibits the $1 / f$-type fluctuations in the lower frequency regime.

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