Alexander Croy, Daniel Midtvedt, Andreas Isacsson, Jari M. Kinaret
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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http://arxiv.org/abs/1204.0911
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