1. Open Access Kent State
  2. Model of Liquid Crystal Alignment by Exposure to Linearly Polarized Ultraviolet Light
Author(s)
Abstract

A simple theoretical model of liquid crystal (LC) alignment by exposure to linearly polarized ultraviolet (UV) light is proposed. The model predicts a universal relationship describing the change of the LC anchoring direction with exposure times, and the changes of polarization direction for the case of a double linearly polarized UV exposure process. This relationship is quantitatively confirmed by our experimental results on polyimide systems. The model also suggests that the LC anchoring strength can be controlled by UV exposure dosage. Pretransitional birefringent measurements show that the order parameter of a linearly polarized UV exposed polyimide surface is much lower than that of buffed polyimide films.
Format
Article
Publication Date
1996-08-01
Publication Title
Physical Review E
Volume
54
Issue
2
First Page
1599
Last Page
1603
Subject
Rights
https://rightsstatements.org/page/InC/1.0/
Community
Chemical Physics Interdisciplinary Program
Comments

Copyright 1996 American Physical Society. Available on publisher's site at http://dx.doi.org/10.1103/PhysRevE.54.1599.
Permalink https://oaks.kent.edu/cpippubs/33
Chen, J., Johnson, D., Bos, P., Wang, X., & West, J. (1996). Model of Liquid Crystal Alignment by Exposure to Linearly Polarized Ultraviolet Light (1–). Physical Review E. https://oaks.kent.edu/node/1138
Chen, J., David Johnson, Philip Bos, Xinghua Wang, and John West. 1996. “Model of Liquid Crystal Alignment by Exposure to Linearly Polarized Ultraviolet Light”. Physical Review E. https://oaks.kent.edu/node/1138.
Chen, J., et al. Model of Liquid Crystal Alignment by Exposure to Linearly Polarized Ultraviolet Light. Physical Review E, 1 Aug. 1996, https://oaks.kent.edu/node/1138.