Visualizing intrinsic localized modes with a nonlinear micromechanical array
DOI (Low Temperature Physics):
https://doi.org/10.1063/1.2957286Ключові слова:
nonlinear dynamics, intrinsic localized mode, discrete breather, stationary and traveling localized modes, micromechanical cantilever array.Анотація
Micromechanical cantilever arrays provide the opportunity to visualize the nonlinear excitations of a discrete nonlinear system in real time. Both stationary and moving localized nonlinear excitations can be produced either by driving the system at a frequency outside the plane wave spectrum or by driving the system at a frequency within the small amplitude dispersion curve range. To see these modes the tips of the cantilevers are imaged on a 1D CCD camera. The brightness of the image depends on the oscillation amplitude of the cantilever so that a distribution of amplitudes in the array can be recorded as a function of position and time. Both the stationary and traveling excitations have been successfully simulated using a nonlinear lumped element lattice model. The former ILM can appear in any size lattice while the latter requires a low density of modes for the formation of smoothly running excitation.
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Опубліковано
2008-05-27
Як цитувати
(1)
M. Sato and A.J. Sievers, Visualizing intrinsic localized modes with a nonlinear micromechanical array, Low Temp. Phys. 34, (2008) [Fiz. Nizk. Temp. 34, 687-694, (2008)] DOI: https://doi.org/10.1063/1.2957286.
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Низькоpозмірні та невпорядковані системи
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