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Technical Physics Letters

, Volume 40, Issue 7, pp 578–580 | Cite as

Electric-field-induced local rotation of molecules in nematic-cholesteric droplets

  • Yu. I. Timirov
  • O. A. Skaldin
  • E. R. Basyrova
  • I. R. Kayumov
Article
  • 101 Downloads

Abstract

The structural dynamics of nematic-cholesteric liquid crystal (LC) droplets occurring in an isotropic environment in an alternating electric field have been studied. It is established that, above a certain threshold field strength, the conoscopic pattern of a Maltese cross becomes dynamic and begins to rotate. The threshold voltage, as well as the frequency of rotation, is almost independent of the droplet diameter. This phenomenon is related to the development of a self-consistent rotation of LC molecules in the plane perpendicular to the droplet axis. It is shown that this rotation initiates the propagation of a helicoidal wave from one pole of the droplet to another.

Keywords

Liquid Crystal Technical Physic Letter Cholesteric Liquid Crystal Liquid Crystal Cell Liquid Crystal Molecule 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Pleiades Publishing, Ltd. 2014

Authors and Affiliations

  • Yu. I. Timirov
    • 1
    • 2
  • O. A. Skaldin
    • 1
    • 2
  • E. R. Basyrova
    • 1
    • 2
  • I. R. Kayumov
    • 1
    • 2
  1. 1.Institute of Molecular and Crystal Physics, Ufa Research CenterRussian Academy of SciencesUfa, BashkortostanRussia
  2. 2.Ufa State Aircraft Technology UniversityUfa, BashkortostanRussia

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