Nature Communications (Feb 2021)
Tuning nonlinear damping in graphene nanoresonators by parametric–direct internal resonance
Abstract
Nonlinear dissipation is frequently observed in nanomechanical resonators, but its microscopic origin remains unclear. Here, nonlinear damping is found to be enhanced in graphene nanodrums close to internal resonance conditions, providing insights on the mechanisms at the basis of this phenomenon.