Figure 5 .
Effects of pre-strain on bare graphene resonator. (a) Frequency shifts of a bare graphene resonator (i.e. without any mass adsorption) due to in-plane tension as a function of an in-plane tension N0 and actuation amplitude p0. (b) Dimensionless parameter θ of graphene resonators as a function of actuation amplitude p0 and in-plane tension N0. (c) Critical in-plane tensions, which induce the transition from nonlinear vibration to harmonic oscillation for graphene resonators, are computationally obtained as a function of the size of a graphene resonator and actuation amplitude.
Dai et al. Nanoscale Research Letters 2012 7:499 doi:10.1186/1556-276X-7-499