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Paper   IPM / Nano-Sciences / 13722
School of Nano Science
  Title:   Dynamics of a rigid rod in a disordered medium with long-range spatial correlation
  Author(s): 
1 . Mohammad Ebrahim Fooladvand
2 . Mahdiyeh Sadrara
  Status:   Published
  Journal: Phys. Rev. E
  No.:  012122
  Vol.:  91
  Year:  2015
  Pages:   1-6
  Publisher(s):   American Physical Society
  Supported by:  IPM
  Abstract:
We investigate the diffusion of a rigid rodlike object in a two-dimensional disordered host medium, which consists of static pointlike sources of force. The points are distributed with long-range spatial correlation and interact with the rod via a repulsive potential. The time dependence of the rod’s center-of-mass mean-squared displacement and its rotational mean-squared displacement are obtained for various degrees of long-range spatial correlation and rod’s lengths. These transport characteristics are compared to those obtained in previous studies for the case of homogeneous distribution of force points. It is shown that existence of long-range correlation among force points makes the center of mass diffusion anomalous.

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