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Optical Materials Express

Optical Materials Express

  • Editor: David Hagan
  • Vol. 4, Iss. 5 — May. 1, 2014
  • pp: 953–959

Electrically assisting crystal growth of blue phase liquid crystals

Michael Chen, Yi-Hsin Lin, Hung-Shan Chen, and Hung-Yuan Chen  »View Author Affiliations

Optical Materials Express, Vol. 4, Issue 5, pp. 953-959 (2014)

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We proposed an electrically assisting crystal growth of blue phase liquid crystals (BP-LCs) to generate uniform crystal orientation of BP-LCs. With an applied electric field, a phase transition from BP-LCs to focal conic state and homeotropic state occurs. As the electric field is removed, the crystal orientation of [220] quickly dominates the crystal growth process and other crystal orientations grow less at the same time. The BP-LCs with a single crystal orientation can be achieved with multiple cycles of the electrical treatment. We also provide a possible mechanism of crystal growth with electrical treatment which is applicable for both BP-LCs and PSBP-LCs. In addition, we conclude that the hysteresis effect is mainly affected by the domain size of PSBP-LCs rather than uniformity of crystal orientation. This study helps further understanding of the origin of hysteresis effect in PSBP-LCs which is important for development of many BP-LCs based photonic devices, such as micro lenses, displays, and lasers.

© 2014 Optical Society of America

OCIS Codes
(160.3710) Materials : Liquid crystals
(230.3720) Optical devices : Liquid-crystal devices

ToC Category:
Liquid Crystals

Original Manuscript: March 24, 2014
Manuscript Accepted: March 29, 2014
Published: April 8, 2014

Michael Chen, Yi-Hsin Lin, Hung-Shan Chen, and Hung-Yuan Chen, "Electrically assisting crystal growth of blue phase liquid crystals," Opt. Mater. Express 4, 953-959 (2014)

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