Figure 2
From: Opto-thermally excited multimode parametric resonance in graphene membranes
Multi-mode response of a parametrically driven graphene resonators. (a) Waterfall plot of the multimode response at different driving amplitudes. Each mode appears at different driving levels due to variations in quality factor and effective driving force between them. The scale bar indicates the root mean square value (RMS) of Vac,out and the labels on the right indicate the RMS driving amplitude Vac,in. (b) Waterfall plot for a different drum, showing more mechanical modes and modal interactions. (c) Forward and backward frequency sweep at the highest parametric driving amplitude for the drum in (b) revealing 14 distinct mechanical modes in parametric resonance.
