A simple generalization of Prandtl–Tomlinson model to study nanoscale rolling friction

  title={A simple generalization of Prandtl–Tomlinson model to study nanoscale rolling friction},
  author={Avirup Sircar and Puneet Kumar Patra},
  journal={Journal of Applied Physics},
Prandtl-Tomlinson (PT) model has been very successful in explaining nanoscale friction in a variety of situations. However, the simplistic PT model, on account of having a point mass being dragged across a sinusoidal force field, cannot be used for studying rolling friction at nanoscales. In this manuscript, we generalize the PT model as a collection of point particles arranged in a circle of radius $R$. The resulting ``rigid body'' is driven in a composite force field by a moving spring (of… 
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