Molecular dynamics study on vibrational properties of graphene nanoribbon resonator under tensile loading

We investigated the tension and strain energy variations as a function of the axial strain in static conditions in graphene nanoribbon resonators and the resonance frequency change with tensile loading in dynamic conditions via classical molecular dynamics simulations. This theoretical study presents the application of graphene nanoribbon resonators tuned by tensile loading as ultrahigh frequency devices. The non-linear mechanical properties of the resonators were found, and for small axial strains, the mechanical properties of the graphene nanoribbon, such as strain-energy vs. axial-strain and frequency vs. strain or tension, were estimated by the classical continuum theory. The resonance frequencies increased with increasing axial strain, and such a relation could be regressed by a linearly increasing line on a log–log scale. The increasing resonance frequency due to increasing tension could be regressed by a square root function.

► Molecular dynamics study on graphene nanoribbon resonators tuned by tensile loading. ► Non-linear mechanical properties of the graphene nanoribbon resonators. ► Resonance frequencies can be regressed by a linear line on a log–log scale. ► Resonance frequency vs. tension can be estimated by a square root function.