Hysteresis behaviour of the nematic-cholesteric phase transition for liquid crystals on polyimide films without use of the rubbing technique

Yoshikazu Yabe, Dae Shik Seo

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The hysteresis behaviour of the nematic-cholesteric phase transition in liquid crystals is closely connected with the alignment of the liquid crystal molecules on the surfaces of treated solid substrates. We have investigated the hysteresis as a function of rubbing strength, using rubbing technology that controls the orientation of the liquid crystal molecules. The surface alignment direction contributes to the hysteresis width, is not dependent on rubbing strength, and is only slightly related to pretilt angles. A no-rubbing treatment, that is, random alignment, is important in order to create a large hysteresis width on homogeneously aligned polyimide films.

Original languageEnglish
Pages (from-to)847-854
Number of pages8
JournalLiquid Crystals
Volume17
Issue number6
DOIs
Publication statusPublished - 1994 Dec

Fingerprint

Liquid Crystals
polyimides
Polyimides
Liquid crystals
Hysteresis
Phase transitions
hysteresis
liquid crystals
alignment
Molecules
Crystal orientation
molecules
Substrates

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

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Hysteresis behaviour of the nematic-cholesteric phase transition for liquid crystals on polyimide films without use of the rubbing technique. / Yabe, Yoshikazu; Seo, Dae Shik.

In: Liquid Crystals, Vol. 17, No. 6, 12.1994, p. 847-854.

Research output: Contribution to journalArticle

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