Traveling Waves and Defect-Initiated Turbulence in Electroconvecting Nematics
- 13 February 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 62 (7), 756-759
- https://doi.org/10.1103/physrevlett.62.756
Abstract
A novel time-dependent state in the form of traveling waves in electrohydrodynamic convection in a thin (15 μm) cell of very large aspect ratio is experimentally studied. The transition leading to uniform waves is a continuous one bifurcating directly from the homogeneous state. The onset of spatiotemporal turbulence in this 2D system is characterized by the appearance of topological defects. The number of defects increases with the control parameter, and their statistical distribution is in very good quantitative agreement with a theoretical curve recently derived for "topological turbulence."Keywords
This publication has 9 references indexed in Scilit:
- Weakly Nonlinear Traveling-Wave ConvectionPhysical Review Letters, 1988
- Spatially and Temporally Modulated Traveling-Wave Pattern in Convecting Binary MixturesPhysical Review Letters, 1988
- Localized, Time-Dependent State in the Convection of a Nematic Liquid CrystalPhysical Review Letters, 1988
- Spatio-temporal complexity at the onset of convection in a binary fluidNuclear Physics B - Proceedings Supplements, 1987
- Traveling waves and spatial variation in the convection of a binary mixturePhysical Review A, 1987
- Multistability and confined traveling-wave patterns in a convecting binary mixturePhysical Review A, 1987
- Codimension-2 bifurcations for convection in binary fluid mixturesPhysical Review A, 1984
- Intermittency through modulational instabilityPhysics Letters A, 1983
- Structure function in lieu of correlation functionApplied Physics A, 1981