Effect of ion beam irradiation and rubbing on the directional behavior and alignment mechanism of liquid crystals on polyimide surfaces

Kang Min Lee, Byeong Yun Oh, Young Hwan Kim, Dae Shik Seo

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We investigated the effects of ion beam (IB) irradiation and rubbing on the directional behavior and alignment mechanism of liquid crystals (LCs) on polyimide (PI) surfaces. We found that the LC direction follows the IB irradiation alignment direction on the PI surface regardless of whether the irradiation occurs before or after rubbing. We assumed that the LC direction depends strongly on the C-O bonds created from C=O bonds on the PI surface broken by IB irradiation and conducted an investigation of the chemical bonding state of the PI surface by x-ray photoelectron spectroscopy.

Original languageEnglish
Article number014507
JournalJournal of Applied Physics
Volume105
Issue number1
DOIs
Publication statusPublished - 2009 Jul 9

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Effect of ion beam irradiation and rubbing on the directional behavior and alignment mechanism of liquid crystals on polyimide surfaces'. Together they form a unique fingerprint.

  • Cite this