The role of roughness-induced damping in the oscillatory motion of bilayer graphene

ZJ Ye and A Otero-de-la-Roza and ER Johnson and A Martini, NANOTECHNOLOGY, 25, 425703 (2014).

DOI: 10.1088/0957-4484/25/42/425703

A multi-scale theoretical model is presented that is the first to offer quantitative agreement with experimental measurements of self-retraction and oscillation of bilayer graphene. The model integrates density- functional theory calculations of the energetics driving flake retraction and molecular-dynamics simulations capturing the dynamic response of laterally-offset rough surfaces. We demonstrate that nanoscale roughness explains self-retraction motion and propose a recipe for tuning that motion by controlling friction.

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