Director Precession and Nonlinear Waves in Nematic Liquid Crystals under Elliptic Shear

T. Börzsönyi, Buka, A. P. Krekhov, J. H. Scaldin, K. D. Kramer

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Abstract

Elliptic shear applied to a homeotropically oriented nematic above the electric bend Fréedericks transition (FT) generates slow precession of the director. The character of the accompanying nonlinear waves changes from diffusive phase waves to dispersive ones exhibiting spirals and spatiotemporal chaos as the FT is approached from above. An exact solution of the flow alignment equations captures the observed precession and predicts its reversal for non-flow-aligning materials. The FT transforms into a Hopf bifurcation opening the way to understand the wave phenomena.

Original languageEnglish
Pages (from-to)1934-1937
Number of pages4
JournalPhysical review letters
Volume84
Issue number9
DOIs
Publication statusPublished - Feb 28 2000

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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