Pattern Selection near the Onset of Convection: The Eckhaus Instability
- 2 December 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 55 (23) , 2575-2578
- https://doi.org/10.1103/physrevlett.55.2575
Abstract
We present an experimental study of the space and time evolution of the Eckhaus instability, a general mechanism of pattern selection for spatially periodic patterns in nonlinear systems. Using a convecting liquid crystal layer, we observed long-wavelength modulations leading to the nucleation of new roll pairs. The development of this process is studied by time-resolved spatial Fourier analysis and compared with predictions based on an amplitude equation.This publication has 11 references indexed in Scilit:
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