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http://hdl.handle.net/10397/4745
Title: | Numerical study on the dynamics of driven disordered colloids | Authors: | Cao, Y Chen, J Wang, Y Jiao, Z Chow, WK |
Issue Date: | 1-Oct-2003 | 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. | Keywords: | Dynamics Colloid Molecular interaction Molecular mechanics Temperature dependence Velocity |
Publisher: | American Physical Society | Journal: | Physical review. B, Condensed matter and materials physics | ISSN: | 1098-0121 | EISSN: | 1550-235X | DOI: | 10.1103/PhysRevB.68.134209 | Rights: | Physical Review B © 2003 The American Physical Society. The Journal's web site is located at http://prb.aps.org/ |
Appears in Collections: | Journal/Magazine Article |
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Cao_Numerical_Disordered_Colloids.pdf | 372.65 kB | Adobe PDF | View/Open |
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