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 journalArticlepeer-review

6 Citations (Scopus)


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
Publication statusPublished - 2012 Feb 2

Bibliographical note

Funding Information:
This research was supported by the MKE (The Ministry of Knowledge Economy), Korea, under the ITRC (Information Technology Research Center) support program supervised by the NIPA (National IT Industry Promotion Agency) (NIPA-2011-C1090-1111-0002).

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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