title: Observation of locked intrinsic localized vibrational modes in a micromechanical oscillator array.
abstract: 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.
authors.affiliation: Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York 14853-2501, USA.
authors.forename: M
authors.initials: M
authors.lastname: Sato
authors.forename: B E
authors.initials: BE
authors.lastname: Hubbard
authors.forename: A J
authors.initials: AJ
authors.lastname: Sievers
authors.forename: B
authors.initials: B
authors.lastname: Ilic
authors.forename: D A
authors.initials: DA
authors.lastname: Czaplewski
authors.forename: H G
authors.initials: HG
authors.lastname: Craighead