Compositional investigation of liquid crystal alignment on tantalum oxide via ion beam irradiation

Jong Yeon Kim, Byeong Yun Oh, Byoung Yong Kim, Young Hwan Kim, Jin Woo Han, Jeong Min Han, Dae-Shik Seo

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

The homogeneously aligned liquid crystal display on Ta2 O5 via ion beam (IB) irradiation was first embodied with controllability of pretilt angle depending on incident angle of the IB. As a result of x-ray photoelectron spectroscopic analysis, the intensity of Ta-O and O-Ta bondings as a function of incident angle behaved reversely with the pretilt angle and the lowest amplitude was observed at 45°. It revealed that the creation of pretilt angle was attributed to the irradiation of the IB by breaking Ta-O and O-Ta bonding so orientational order was generated by directional IB. Comparable electro-optical characteristics to rubbed polyimide were also achieved.

Original languageEnglish
Article number043505
JournalApplied Physics Letters
Volume92
Issue number4
DOIs
Publication statusPublished - 2008 Feb 8

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tantalum oxides
ion beams
liquid crystals
alignment
irradiation
controllability
spectroscopic analysis
polyimides
photoelectrons
x rays

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Kim, Jong Yeon ; Oh, Byeong Yun ; Kim, Byoung Yong ; Kim, Young Hwan ; Han, Jin Woo ; Han, Jeong Min ; Seo, Dae-Shik. / Compositional investigation of liquid crystal alignment on tantalum oxide via ion beam irradiation. In: Applied Physics Letters. 2008 ; Vol. 92, No. 4.
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Compositional investigation of liquid crystal alignment on tantalum oxide via ion beam irradiation. / Kim, Jong Yeon; Oh, Byeong Yun; Kim, Byoung Yong; Kim, Young Hwan; Han, Jin Woo; Han, Jeong Min; Seo, Dae-Shik.

In: Applied Physics Letters, Vol. 92, No. 4, 043505, 08.02.2008.

Research output: Contribution to journalArticle

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