Textures of polymer-dispersed chiral liquid crystal microdroplets

Deng Ke Yang; Peter P. Crooker

doi:10.1117/12.19927

1 April 1990 Textures of polymer-dispersed chiral liquid crystal microdroplets

Deng Ke Yang, Peter P. Crooker

Proceedings Volume 1257, Liquid Crystal Displays and Applications; (1990) https://doi.org/10.1117/12.19927
Event: Electronic Imaging: Advanced Devices and Systems, 1990, Santa Clara, CA, United States

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.

Citation Download Citation

Deng Ke Yang and Peter P. Crooker "Textures of polymer-dispersed chiral liquid crystal microdroplets", Proc. SPIE 1257, Liquid Crystal Displays and Applications, (1 April 1990); https://doi.org/10.1117/12.19927

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