Shear-induced criticality near a liquid-solid transition of colloidal suspensions
We investigate colloidal suspensions under shear flow through numerical experiments. By measuring the time-correlation function of a bond-orientational order parameter, we find a divergent time scale near a transition point from a disordered fluid phase to an ordered fluid phase, where the order is...
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| Published in | Physical review. E, Statistical, nonlinear, and soft matter physics Vol. 83; no. 2 Pt 1; p. 020401 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
United States
15.02.2011
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| Online Access | Get more information |
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| Summary: | We investigate colloidal suspensions under shear flow through numerical experiments. By measuring the time-correlation function of a bond-orientational order parameter, we find a divergent time scale near a transition point from a disordered fluid phase to an ordered fluid phase, where the order is characterized by a nonzero value of the bond-orientational order parameter. We also present a phase diagram in the (ρ,γ(ex)) plane, where ρ is the density of the colloidal particles and γ(ex) is the shear rate of the solvent. The transition line in the phase diagram terminates at the equilibrium transition point, while a critical region near the transition line vanishes continuously as γ(ex)→0. |
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| ISSN: | 1550-2376 |
| DOI: | 10.1103/physreve.83.020401 |