Nonlinear Damping in Graphene Resonators

Abstract

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 and ac voltages, one can cross over from a linear to a nonlinear-damping dominated regime. We discuss the behavior of the effective quality factor in this context.

extended and revised version: 10 pages, 6 figures

References in corpus (5)

• The electronic properties of graphene
• Sideband Cooling Micromechanical Motion to the Quantum Ground State
• Electrostatic interactions between graphene layers and their environment
• Intrinsic dissipation in nanomechanical resonators due to phonon tunneling
• Pinning of a two-dimensional membrane on top of a patterned substrate: the case of graphene