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Shear-induced criticality near a liquid-solid transition of colloidal suspensions

Masamichi J. Miyama and Shin-ichi Sasa
Phys. Rev. E 83, 020401(R) – Published 15 February 2011

Abstract

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,γ̇ex) plane, where ρ is the density of the colloidal particles and γ̇ex 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 γ̇ex0.

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  • Received 7 October 2010

DOI:https://doi.org/10.1103/PhysRevE.83.020401

©2011 American Physical Society

Authors & Affiliations

Masamichi J. Miyama and Shin-ichi Sasa

  • Department of Pure and Applied Sciences, University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8902, Japan

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Issue

Vol. 83, Iss. 2 — February 2011

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