Abstract
We consider the effect of a parametric modulation in a system that shows electrohydrodynamic instability with spatiotemporal chaos. This instability appears when an electric field is applied to a sample of Liquid Crystals confined between two conducting plates. The pattern degenerates in to spatiotemporal chaos when the field exceeds a threshold. A suitable modulation of the electric field induces a new ordered pattern in spite of the presence of chaos. A possible interpretation of this phenomena is discussed on the basis of transient travelling waves (TTW) present in the chaotic regime.
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