2017/05/15 by Taichi Inoue, Yuki Anno, Inoue, Taichi +9
Physics and Astronomy · #Applied Physics (physics.app-ph) #FOS: Physical sciences #physics.app-ph
paper · pdf · doi:10.48550/arxiv.1705.05056
arxiv created 2017/05/15 · arxiv updated 2017/05/16
We demonstrate the control of resonance characteristics of a drum type graphene mechanical resonator in nonlinear oscillation regime by the photothermal effect, which is induced by a standing wave of light between a graphene and a substrate. Unlike the conventional Duffing type nonlinearity, the resonance characteristics in nonlinear oscillation regime is modulated by the standing wave of light despite a small variation amplitude. From numerical calculations with a combination of equations of heat and motion with Duffing type nonlinearity, this can be explained that the photothermal effect causes delayed modulation of stress or tension of the graphene.