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Title: Numerical study on the dynamics of driven disordered colloids
Authors: Cao, Yigang
Chen, Jiangxing
Wang, Youmei
Jiao, Zhengkuan
Chow, Wan-Ki
Subjects: Dynamics
Molecular interaction
Molecular mechanics
Temperature dependence
Issue Date: 1-Oct-2003
Publisher: American Physical Society
Source: Physical review B, condensed matter and materials physics, 1 Oct. 2003, v. 68, no. 13, 134209, p. 1-4.
Abstract: Using Langevin simulations, we numerically investigate the dynamics of driven two-dimensional colloids subject to randomly distributed pointlike pinning centers. Increasing the strength of pinning centers, we find a crossover from elastic to plastic depinnings, where a substantial increase in the depinning force is observed. The influence of temperature is examined, and we find a dynamic melting transition from the moving smectic to the moving liquid at high driving forces. A peak is found in the dynamic critical driving force across the transition, accompanied by a crossing of velocity-force dependence curves.
Rights: Physical Review B © 2003 The American Physical Society. The Journal's web site is located at
Type: Journal/Magazine Article
DOI: 10.1103/PhysRevB.68.134209
ISSN: 1098-0121 (print)
1550-235X (online)
Appears in Collections:BSE Journal/Magazine Articles

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