Study on mechanism of pretilt angle generation in nematic liquid crystal for rubbed polyimide surfaces

Dae Shik Seo, Lyul Yeon Hwang, Bo Ho Lee

Research output: Contribution to conferencePaper

Abstract

We have studied the effect of the polymer tilt angle for pretilt angle generation in nematic liquid crystal, 4-cyano-4-n-penthylbiphenyl (5CB) on rubbed polyimide (PI) surfaces. The polymer tilt angle was determined by measuring induced optical retardation produced in rubbed PI surfaces by rubbing. We suggest that the polymer tilt angle is not related directly to the pretilt angle on rubbed PI surfaces by rubbing. We proposed a microscopic model of pretilt angle generation on rubbed PI surfaces by rubbing. Finally, we conclude that the pretilt angle generation of 5CB strongly depends on the characterization of polymer materials and the micro-asymmetric triangular structure of the polymer on rubbed PI surfaces.

Original languageEnglish
Pages946-948
Number of pages3
Publication statusPublished - 1997
EventProceedings of the 1997 5th IEEE International Conference on Properties and Applications of Dielectric Materials. Part 1 (of 2) - Seoul, Korea
Duration: 1997 May 251997 May 30

Other

OtherProceedings of the 1997 5th IEEE International Conference on Properties and Applications of Dielectric Materials. Part 1 (of 2)
CitySeoul, Korea
Period97/5/2597/5/30

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Materials Chemistry

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    Seo, D. S., Hwang, L. Y., & Lee, B. H. (1997). Study on mechanism of pretilt angle generation in nematic liquid crystal for rubbed polyimide surfaces. 946-948. Paper presented at Proceedings of the 1997 5th IEEE International Conference on Properties and Applications of Dielectric Materials. Part 1 (of 2), Seoul, Korea, .