Numerical study on the dynamics of driven disordered colloids

Yigang Cao, Jiangxing Chen, Youmei Wang, Zhengkuan Jiao, K. Chow

Research output: Journal article publicationJournal articleAcademic researchpeer-review

13 Citations (Scopus)

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.
Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume68
Issue number13
DOIs
Publication statusPublished - 1 Jan 2003

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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