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Helically modulated electroclinical effects in twist grain boundary liquid crystals

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Abstract:

We report the first observation of an electroclinical effect at the TGB-TGB transition induced by an external DC electric field applied perpendicular to the pitch direction. Upon increasing the field, the smectic layers rather than the director field tilt over relative to the helical axis, allowing to detect the effect by X-ray scattering from well aligned samples. The observations are qualitatively interpreted in the frame of a mean field phenomenological model of a helically modulated electroclinical effect.

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Authors and Affiliations

  1. Centre de Recherche Paul Pascal - CNRS, avenue A. Schweitzer, 33600 Pessac, France, , , , , , FR

    M. Petit & P. Barois

  2. Institut Non-Linéaire de Nice, Sophia-Antipolis, 1361 route des Lucioles, 06560 Valbonne, France, , , , , , FR

    M. Nobili

Authors
  1. M. Petit
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  2. M. Nobili
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  3. P. Barois
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Additional information

Received: 24 April 1998 / Revised: 22 June 1998 / Accepted: 31 July 1998

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Petit, M., Nobili, M. & Barois, P. Helically modulated electroclinical effects in twist grain boundary liquid crystals. Eur. Phys. J. B 6, 341–345 (1998). https://doi.org/10.1007/s100510050559

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  • DOI: https://doi.org/10.1007/s100510050559

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