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Proceedings Paper

Textures of polymer-dispersed chiral liquid crystal microdroplets
Author(s): Deng Ke Yang; Peter P. Crooker
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Paper Abstract

We have microscopically observed the texture of very large droplets of chiral liquid crystal in a polymer matrix under the influence of an electric field. The dielectric anisotropy of the liquid crystal is negative and the pitch is made very long so that a fingerprint-like texture can be observed within the droplet. Without the field, the droplets appear to be in a spherulite texture: the helical axis lies everywhere along a radius and a disclination line extends from the center to the periphery of the droplet. As an electric field is applied, the droplet undergoes a transition to the planar texture, the texture first occurring near the center of the droplet and increasing in radius as the field is increased. The zero-field texture will be discussed in terms of the Frank-Pryce spherulite model. Implication for a polymer-dispersed chiral liquid crystal (PDCLC) display will be reviewed.

Paper Details

Date Published: 1 April 1990
PDF: 8 pages
Proc. SPIE 1257, Liquid Crystal Displays and Applications, (1 April 1990); doi: 10.1117/12.19927
Show Author Affiliations
Deng Ke Yang, Univ. of Hawaii (United States)
Peter P. Crooker, Univ. of Hawaii (United States)

Published in SPIE Proceedings Vol. 1257:
Liquid Crystal Displays and Applications
J. William Doane; Zvi Yaniv, Editor(s)

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