ao7b00699_si_001.pdf (1.41 MB)
Resonance Control of a Graphene Drum Resonator in a Nonlinear Regime by a Standing Wave of Light
journal contribution
posted on 2017-09-14, 08:17 authored by Taichi Inoue, Yuki Anno, Yuki Imakita, Kuniharu Takei, Takayuki Arie, Seiji AkitaWe demonstrate the control of resonance
characteristics of a drum-type
graphene mechanical resonator in a nonlinear oscillation regime using
the photothermal effect, which is induced by a standing wave of light
between graphene and a substrate. Unlike the resonance characteristics
of a conventional Duffing-type nonlinearity, those of the nonlinear
oscillation regime are modulated by the standing wave of light with
a contribution of the scattered light of an actuation laser, despite
a slight variation of amplitude. Numerical calculations conducted
with a combination of equations of heat and motion with the Duffing-type
nonlinearity explain this modulation: the photothermal effect delays
the modulation of graphene stress or tension.