Liquid crystal alignment properties on zirconia doped polyimide layer

Hong Gyu Park, Hyung Jun 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 (ZrO2) 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 ZrO2 nanoparticles from 0.01 wt% to 0.3 wt%. Pretilt angles of LCs on ZrO2 nanoparticles doped LC alignment layers slightly increased as the percentage of ZrO2 nanoparticles rose. However, contact angles were almost the same. When twist-nematic (TN) LC cells used LC alignment layers with ZrO2 nanoparticle content of 0.1 wt%, best performance was shown. Finally, it is shown that ZrO2 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, Hyung Jun ; 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 (ZrO2) 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 ZrO2 nanoparticles from 0.01 wt{\%} to 0.3 wt{\%}. Pretilt angles of LCs on ZrO2 nanoparticles doped LC alignment layers slightly increased as the percentage of ZrO2 nanoparticles rose. However, contact angles were almost the same. When twist-nematic (TN) LC cells used LC alignment layers with ZrO2 nanoparticle content of 0.1 wt{\%}, best performance was shown. Finally, it is shown that ZrO2 nanoparticles doped LC alignment layers have more thermal budget than pristine ones in thermal stability test.",
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Park, HG, Kim, HJ, Jeong, HY, Yang, S, Kang, YG, Lee, HJ, Oh, BY, Kim, BY, Kim, YH, Park, YP, Han, JM & Seo, DS 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, Hyung Jun; 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, Hyung Jun

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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AB - This paper introduces zirconia (ZrO2) 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 ZrO2 nanoparticles from 0.01 wt% to 0.3 wt%. Pretilt angles of LCs on ZrO2 nanoparticles doped LC alignment layers slightly increased as the percentage of ZrO2 nanoparticles rose. However, contact angles were almost the same. When twist-nematic (TN) LC cells used LC alignment layers with ZrO2 nanoparticle content of 0.1 wt%, best performance was shown. Finally, it is shown that ZrO2 nanoparticles doped LC alignment layers have more thermal budget than pristine ones in thermal stability test.

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