TY - UNPB
T1 - Enhancing nonlinear damping by parametric-direct internal resonance
AU - Keşkekler, Ata
AU - Shoshani, Oriel
AU - Lee, Martin
AU - van der Zant, Herre S. J.
AU - Steeneken, Peter G.
AU - Alijani, Farbod
PY - 2020
Y1 - 2020
N2 - Mechanical sources of nonlinear damping play a central role in modern
physics, from solid-state physics to thermodynamics. The microscopic
theory of mechanical dissipation [M. I . Dykman, M. A. Krivoglaz,
Physica Status Solidi (b) 68, 111 (1975)] suggests that nonlinear
damping of a resonant mode can be strongly enhanced when it is coupled
to a vibration mode that is close to twice its resonance frequency. To
date, no experimental evidence of this enhancement has been realized. In
this letter, we experimentally show that nanoresonators driven into
parametric-direct internal resonance provide supporting evidence for the
microscopic theory of nonlinear dissipation. By regulating the drive
level, we tune the parametric resonance of a graphene nanodrum over a
range of 40-70 MHz to reach successive two-to-one internal resonances,
leading to a nearly two-fold increase of the nonlinear damping. Our
study opens up an exciting route towards utilizing modal interactions
and parametric resonance to realize resonators with engineered nonlinear
dissipation over wide frequency range.
AB - Mechanical sources of nonlinear damping play a central role in modern
physics, from solid-state physics to thermodynamics. The microscopic
theory of mechanical dissipation [M. I . Dykman, M. A. Krivoglaz,
Physica Status Solidi (b) 68, 111 (1975)] suggests that nonlinear
damping of a resonant mode can be strongly enhanced when it is coupled
to a vibration mode that is close to twice its resonance frequency. To
date, no experimental evidence of this enhancement has been realized. In
this letter, we experimentally show that nanoresonators driven into
parametric-direct internal resonance provide supporting evidence for the
microscopic theory of nonlinear dissipation. By regulating the drive
level, we tune the parametric resonance of a graphene nanodrum over a
range of 40-70 MHz to reach successive two-to-one internal resonances,
leading to a nearly two-fold increase of the nonlinear damping. Our
study opens up an exciting route towards utilizing modal interactions
and parametric resonance to realize resonators with engineered nonlinear
dissipation over wide frequency range.
KW - Condensed Matter - Mesoscale and Nanoscale Physics
M3 - Preprint
BT - Enhancing nonlinear damping by parametric-direct internal resonance
ER -