Alignment properties of liquid crystal molecules with negative dielectric anisotropy on hydrogenated silicon carbide films

Won Hoe Koo, Jong Bok Kim, Byoung Har Hwang, Jong Tae Kim, Sung Jin Jo, Chang Su Kim, Se Jong Lee, Hong Koo Baik

Research output: Contribution to journalArticle

2 Citations (Scopus)


We study the alignment properties of liquid crystals (LCs) with a negative dielectric anisotropy on a hydrogenated silicon carbide (SiC:H) film, which is an alternative alignment material. SiC:H layers align LC molecules with a negative dielectric anisotropy via ion beam (IB) irradiation and control the pretilt angle in a range from 90 to 75° depending on the change of IB irradiation angle. Also, when they are exposed to high temperatures for a long time, they show robust properties without degradation. We conclude that although the SiC:H alignment layers are not sensitive to IB irradiation compared with the SiC layers, they show a potential as alternative LC alignment layers for IB irradiation method.

Original languageEnglish
Pages (from-to)4617-4619
Number of pages3
JournalJapanese journal of applied physics
Issue number6 PART 1
Publication statusPublished - 2008 Jun 13


All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this