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Nonlinear electrophoresis of dielectric and metal spheres in a nematic liquid crystal

Author

Listed:
  • Oleg D. Lavrentovich

    (Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University)

  • Israel Lazo

    (Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University)

  • Oleg P. Pishnyak

    (Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University)

Abstract

Liquid-crystal electrophoresis Electrophoresis is a motion of charged dispersed particles relative to a fluid in a uniform electric field. It is widely used as a means of separation, often with water (an isotropic fluid) as the carrier medium in a direct-current field. Lavrentovich et al. now describe a variant of the technique — liquid-crystal electrophoresis — that may find application in new display technologies, novel separations, micromotors and elsewhere. The method uses an anisotropic fluid as the carrier — a nematic liquid crystal — which allows motion of both charged and uncharged particles of perfect symmetry in either alternating- or direct-current fields. Use of an alternating-current field should offer practical advantages in some applications. This new type of electrophoresis is caused by a distortion in the orientation of the liquid crystals around the particles, rather than an effect on the particles themselves.

Suggested Citation

  • Oleg D. Lavrentovich & Israel Lazo & Oleg P. Pishnyak, 2010. "Nonlinear electrophoresis of dielectric and metal spheres in a nematic liquid crystal," Nature, Nature, vol. 467(7318), pages 947-950, October.
    • Handle: RePEc:nat:nature:v:467:y:2010:i:7318:d:10.1038_nature09427
    DOI: 10.1038/nature09427
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    Cited by:

    1. Feng, Huicheng & Wong, Teck Neng, 2018. "Induced-charge electro-osmosis in dielectric annuli," Applied Mathematics and Computation, Elsevier, vol. 333(C), pages 133-144.
    2. Sung-Jo Kim & Žiga Kos & Eujin Um & Joonwoo Jeong, 2024. "Symmetrically pulsating bubbles swim in an anisotropic fluid by nematodynamics," Nature Communications, Nature, vol. 15(1), pages 1-8, December.

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