Temperature dependence of polar anchoring strength of nematic liquid crystal aligned on rubbed side chain liquid crystalline polymer

V. N. Raja, S. W. Kang, J. S. Lee, J. C. Lee

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We have investigated the temperature dependence of the polar anchoring strength of nematic liquid crystal aligned homogeneously on glass substrates treated with side chain liquid crystalline polymer poly (4-cyanophenyl-4′-ethoxybenzoyloxy) acrylate (LCP100). The polar anchoring strength of rubbed LCP100 films is seen to be quite strong and comparable to that of rubbed polyimide films. The temperature dependence of orientational extrapolation length failed to show a critical divergence instead a very small increase on approaching the N-I transition. This indicates that the surface order parameter is quite strong and hence the polar anchoring energy weakens quite gradually.

Original languageEnglish
Pages (from-to)157-162
Number of pages6
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume301
DOIs
Publication statusPublished - 01-01-1997
Externally publishedYes

Fingerprint

Nematic liquid crystals
Liquid crystal polymers
liquid crystals
temperature dependence
polymers
liquids
acrylates
polyimides
Extrapolation
Polyimides
extrapolation
divergence
Glass
Temperature
glass
Substrates
energy
acrylic acid

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

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T1 - Temperature dependence of polar anchoring strength of nematic liquid crystal aligned on rubbed side chain liquid crystalline polymer

AU - Raja, V. N.

AU - Kang, S. W.

AU - Lee, J. S.

AU - Lee, J. C.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - We have investigated the temperature dependence of the polar anchoring strength of nematic liquid crystal aligned homogeneously on glass substrates treated with side chain liquid crystalline polymer poly (4-cyanophenyl-4′-ethoxybenzoyloxy) acrylate (LCP100). The polar anchoring strength of rubbed LCP100 films is seen to be quite strong and comparable to that of rubbed polyimide films. The temperature dependence of orientational extrapolation length failed to show a critical divergence instead a very small increase on approaching the N-I transition. This indicates that the surface order parameter is quite strong and hence the polar anchoring energy weakens quite gradually.

AB - We have investigated the temperature dependence of the polar anchoring strength of nematic liquid crystal aligned homogeneously on glass substrates treated with side chain liquid crystalline polymer poly (4-cyanophenyl-4′-ethoxybenzoyloxy) acrylate (LCP100). The polar anchoring strength of rubbed LCP100 films is seen to be quite strong and comparable to that of rubbed polyimide films. The temperature dependence of orientational extrapolation length failed to show a critical divergence instead a very small increase on approaching the N-I transition. This indicates that the surface order parameter is quite strong and hence the polar anchoring energy weakens quite gradually.

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