Посилання:Visualizing intrinsic localized modes with a nonlinear
micromechanical array / M. Sato, A.J. Sievers // Физика низких температур. — 2008. — Т. 34, № 7. — С. 687–694. — Бібліогр.: 41 назв. — англ.
Підтримка:The authors appreciated the insightful comments of A.M. Kosevich at the 2003 NATO meeting on ILMs at Erice. His suggestion that the ILM spatial oscillations observed in Figs. 8(b,c) of Ref. 23 may be due to Bloch oscillations remains intriguing. We also dedicate this paper to the memory of Shozo Takeno, who pioneered in the ILM field. This work was supported by DOE DE-FG02-04ER46154 and JSPS-Grant-in-Aid for Scientific Research (B)18340086.
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.