A Transition to Spatiotemporal Chaos under a Symmetry Breaking in a Homeotropic Nematic System

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  • Anugraha Rinto
    Department of Applied Quantum Physics and Nuclear Engineering, Graduate School of Engineering, Kyushu University
  • Hidaka Yoshiki
    Department of Applied Quantum Physics and Nuclear Engineering, Graduate School of Engineering, Kyushu University
  • Oikawa Noriko
    Department of Applied Quantum Physics and Nuclear Engineering, Graduate School of Engineering, Kyushu University
  • Kai Shoichi
    Department of Applied Quantum Physics and Nuclear Engineering, Graduate School of Engineering, Kyushu University Department of Systems Life Sciences, Graduate School of Systems Life Sciences, Kyushu University

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This Letter reports a transition to spatiotemporal chaos (STC) in an electroconvective system of a homeotropic nematic liquid crystal under a symmetry breaking. The homeotropic system has a continuous symmetry which leads to the occurring of STC at a threshold for convection. When the symmetry is broken by an external field, a periodic pattern appears first and then STC appears at a higher transition point. The transition from the periodic pattern to STC is investigated by order parameters which were obtained from spectra of convective patterns. The results are compared with the recent theoretical researches for the damped Nikolaevskiy equation.

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