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Paper   IPM / Physic / 9541
School of Physics
  Title:   Nano-Indentation of Circular Graphene Flakes
1.  M. Neek-Amal
2.  R. Asgari
  Status:   Preprint
  Year:  2009
  Supported by:  IPM
Nano-indentation of circular graphene flakes are studied by using Molecular Dynamics simulation. We show that the theory of continuum elasticity based on nonlinear Föpple-Hencky equations is applicable on a circular suspended graphene flake. Our simulation results are plenty compatible to those results calculated by the nonlinear elasticity theory. We find the force-displacement curves in good agreement with the recent experimental measurements and conclude they are temperature independent. We find as well the vibration frequency for such a system and monitor that it behaviors as a sinusoidal manner at small circular graphene size.

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