Direct and parametric synchronization of a graphene self-oscillator

Abstract

We explore the dynamics of a graphene nanomechanical oscillator coupled to a reference oscillator. Circular graphene drums are forced into self-oscillation, at a frequency fosc, by means of photothermal feedback induced by illuminating the drum with a continuous-wave red laser beam. Synchronization to a reference signal, at a frequency fsync, is achieved by shining a power-modulated blue laser onto the structure. We investigate two regimes of synchronization as a function of both detuning and signal strength for direct (fsync = fosc) and parametric locking (fsync = 2fosc). We detect a regime of phase resonance, where the phase of the oscillator behaves as an underdamped second-order system, with the natural frequency of the phase resonance showing a clear power-law dependence on the locking signal strength. The phase resonance is qualitatively reproduced using a forced van der Pol-Duffing-Mathieu equation.

arXiv comment11 pages, 4 figures, 25 references

References in corpus (9)

• Synchronization of Micromechanical Oscillators Using Light
• Graphene mechanical oscillators with tunable frequency
• Synchronization of two anharmonic nanomechanical oscillators
• Single-layer MoS2 mechanical resonators
• Photonic Cavity Synchronization of Nanomechanical Oscillators
• Synchronization by Nonlinear Frequency Pulling
• Opto-Mechanics of deformable Fabry-Perot Cavities
• Visualizing the motion of graphene nanodrums
• Frequency modulated self-oscillation and phase inertia in a synchronized nanowire mechanical resonator

Cited by in corpus (5)

• Young's modulus of 2D materials extracted from their nonlinear dynamic response
• Dynamics of 2D Material Membranes
• Graphene multi-mode parametric oscillators
• Multimode internal resonances in a MEMS self-sustained oscillator
• Very large scale characterization of graphene mechanical devices using a colorimetry technique