Anchoring strength of thin aligned-polymer films formed by liquid crystalline monomer

Takeshi Murashige, Hideo Fujikake, Seiichiro Ikehata, Fumio Sato

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We have evaluated the polar anchoring strength of a thin molecule-aligned polymer film formed by a liquid crystalline monomer. The polymer film was obtained by photopolymerization of the monomer oriented by a rubbed polyimide alignment layer in a chamber filled with N2 gas. We fabricated a nematic liquid crystal cell using the thin aligned-polymer films as alignment layers, and then evaluated the anchoring strength of the polymer by measuring the optical retardation curve of the cell driven by voltages. The experimental result showed that the anchoring strength was one order of magnitude lower than that of a conventional rubbed polyimide alignment layer, and decreased with increasing the cure temperature of the monomer film.

Original languageEnglish
Pages (from-to)1614-1617
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume42
Issue number4 A
DOIs
Publication statusPublished - 2003 Apr
Externally publishedYes

Keywords

  • Aligned-polymer film
  • Anchoring strength
  • Liquid crystalline monomer
  • Optical retardation

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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