• Flexoelectric origin of oblique rolls with helical flow in electroconvective nematics under DC excitation

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    • Keywords

       

      Nematic liquid crystals; flexoelectricity; oblique roll instability; electrohydrodynamics

    • Abstract

       

      We present a 3-dimensional, linear analysis of electrohydrodynamic (EHD) roll instability in a nematic liquid crystal under DC excitation. It is shown that the flexoelectric effect leads to a new symmetry of the flow pattern, viz. ahelical flow inoblique rolls. Our experimental observations agree with the theoretical predictions.

    • Author Affiliations

       

      V A Raghunathan1 N V Madhusudana1

      1. Raman Research Institute, Bangalore - 560 080, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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