Observation of locked intrinsic localized vibrational modes in a micromechanical oscillator array.
The nonlinear vibrational properties of a periodic micromechanical oscillator array have been measured. For sufficiently large amplitude of the driver, the optic mode of the di-element cantilever array becomes unstable and breaks up into excitations ranging over only a few cells. A driver-induced locking effect is observed to eternalize some of these intrinsic localized modes so that their amplitudes become fixed and the modes become spatially pinned.
Sato
M
M
Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York 14853-2501, USA.
Hubbard
B E
BE
Sievers
A J
AJ
Ilic
B
B
Czaplewski
D A
DA
Craighead
H G
HG