Nonlinear Damping in Graphene Resonators

Details Nonlinear Damping in Graphene Resonators Nonlinear Damping in Graphene Resonators

2012-04-04

arxiv.org/abs/1204.0911v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures

Scientific paper

Based on a continuum mechanical model for single-layer graphene we propose and analyze a microscopic mechanism for dissipation in nanoelectromechanical graphene resonators. We find that coupling between flexural modes and in-plane phonons leads to linear and nonlinear damping of out-of-plane vibrations. By tuning external parameters such as bias voltage, one can cross over from a linear to a nonlinear-damping dominated regime. We discuss the behavior of the effective quality factor, and compare our results with recent experiments.

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