Liquid crystal alignment properties on zirconia doped polyimide layer

Hong Gyu Park, Hyungjun Kim, Hae Yoon Jeong, Suk Yang, Young Gu Kang, Hee Jun Lee, Byeong Yun Oh, Byoung Yong Kim, Young Hwan Kim, Yong Pil Park, Jeong Min Han, Dae-Shik Seo

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This paper introduces zirconia (ZrO 2 ) use in liquid crystal (LC) alignment for uniform and effective LC orientation. We used a conventional rubbing process to induce LC alignment. As a result, uniform LC alignments were achieved in all samples with ZrO 2 nanoparticles from 0.01 wt% to 0.3 wt%. Pretilt angles of LCs on ZrO 2 nanoparticles doped LC alignment layers slightly increased as the percentage of ZrO 2 nanoparticles rose. However, contact angles were almost the same. When twist-nematic (TN) LC cells used LC alignment layers with ZrO 2 nanoparticle content of 0.1 wt%, best performance was shown. Finally, it is shown that ZrO 2 nanoparticles doped LC alignment layers have more thermal budget than pristine ones in thermal stability test.

Original languageEnglish
Pages (from-to)90-96
Number of pages7
JournalMolecular Crystals and Liquid Crystals
Volume553
DOIs
Publication statusPublished - 2012 Feb 2

Fingerprint

Liquid Crystals
polyimides
Polyimides
zirconium oxides
Zirconia
Liquid crystals
liquid crystals
alignment
Nanoparticles
nanoparticles
doped crystals
Nematic liquid crystals
stability tests
zirconium oxide
Crystal orientation
Contact angle
budgets
Thermodynamic stability
thermal stability

All Science Journal Classification (ASJC) codes

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

Cite this

Park, Hong Gyu ; Kim, Hyungjun ; Jeong, Hae Yoon ; Yang, Suk ; Kang, Young Gu ; Lee, Hee Jun ; Oh, Byeong Yun ; Kim, Byoung Yong ; Kim, Young Hwan ; Park, Yong Pil ; Han, Jeong Min ; Seo, Dae-Shik. / Liquid crystal alignment properties on zirconia doped polyimide layer. In: Molecular Crystals and Liquid Crystals. 2012 ; Vol. 553. pp. 90-96.
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abstract = "This paper introduces zirconia (ZrO 2 ) use in liquid crystal (LC) alignment for uniform and effective LC orientation. We used a conventional rubbing process to induce LC alignment. As a result, uniform LC alignments were achieved in all samples with ZrO 2 nanoparticles from 0.01 wt{\%} to 0.3 wt{\%}. Pretilt angles of LCs on ZrO 2 nanoparticles doped LC alignment layers slightly increased as the percentage of ZrO 2 nanoparticles rose. However, contact angles were almost the same. When twist-nematic (TN) LC cells used LC alignment layers with ZrO 2 nanoparticle content of 0.1 wt{\%}, best performance was shown. Finally, it is shown that ZrO 2 nanoparticles doped LC alignment layers have more thermal budget than pristine ones in thermal stability test.",
author = "Park, {Hong Gyu} and Hyungjun Kim and Jeong, {Hae Yoon} and Suk Yang and Kang, {Young Gu} and Lee, {Hee Jun} and Oh, {Byeong Yun} and Kim, {Byoung Yong} and Kim, {Young Hwan} and Park, {Yong Pil} and Han, {Jeong Min} and Dae-Shik Seo",
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Park, HG, Kim, H, Jeong, HY, Yang, S, Kang, YG, Lee, HJ, Oh, BY, Kim, BY, Kim, YH, Park, YP, Han, JM & Seo, D-S 2012, 'Liquid crystal alignment properties on zirconia doped polyimide layer', Molecular Crystals and Liquid Crystals, vol. 553, pp. 90-96. https://doi.org/10.1080/15421406.2011.609410

Liquid crystal alignment properties on zirconia doped polyimide layer. / Park, Hong Gyu; Kim, Hyungjun; Jeong, Hae Yoon; Yang, Suk; Kang, Young Gu; Lee, Hee Jun; Oh, Byeong Yun; Kim, Byoung Yong; Kim, Young Hwan; Park, Yong Pil; Han, Jeong Min; Seo, Dae-Shik.

In: Molecular Crystals and Liquid Crystals, Vol. 553, 02.02.2012, p. 90-96.

Research output: Contribution to journalArticle

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AU - Park, Hong Gyu

AU - Kim, Hyungjun

AU - Jeong, Hae Yoon

AU - Yang, Suk

AU - Kang, Young Gu

AU - Lee, Hee Jun

AU - Oh, Byeong Yun

AU - Kim, Byoung Yong

AU - Kim, Young Hwan

AU - Park, Yong Pil

AU - Han, Jeong Min

AU - Seo, Dae-Shik

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