Inorganic layer for homogeneously aligned crystals using ion beam irradiation

Byoung Yong Kim, Hong Gyu Park, Young Hwan Kim, Jeong Min Han, Dae Shik Seo

Research output: Contribution to journalArticle

Abstract

The authors introduce variable liquid crystal (LC) properties via ion beam (IB) irradiation on the ZrO2 layers. A uniform LC alignment characteristic was achieved on the ZrO2 thin film, and the pretilt angle was about 1.2°. We have shown that the pretilt angle can be controlled by changing ion beam parameters, such as the ion beam energy, the angle of incidence, and the irradiation time. The low pretilt angle for the nematic liquid crystal (NLC) on the ZrO2 thin film treated by ion beam irradiation could be adopted in planer alignment LCD liquid crystal display (LCD) applications as in-plane switching and fringe-field switching modes. The thermal stability of the ZrO2 thin film was sustained until 210°C. We also have shown that a liquid crystal cell aligned homogeneously by the ion beam irradiation exhibits the voltage-transmittance curve similar to that of a rubbed polyimide cell.

Original languageEnglish
Pages (from-to)38-44
Number of pages7
JournalMolecular Crystals and Liquid Crystals
Volume550
DOIs
Publication statusPublished - 2011 Nov 18

Fingerprint

Ion beams
Liquid Crystals
ion beams
liquid crystals
Irradiation
Crystals
irradiation
Liquid crystals
crystals
Liquid crystal displays
Thin films
thin films
alignment
Nematic liquid crystals
Polyimides
cells
polyimides
Thermodynamic stability
transmittance
thermal stability

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Kim, Byoung Yong ; Park, Hong Gyu ; Kim, Young Hwan ; Han, Jeong Min ; Seo, Dae Shik. / Inorganic layer for homogeneously aligned crystals using ion beam irradiation. In: Molecular Crystals and Liquid Crystals. 2011 ; Vol. 550. pp. 38-44.
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abstract = "The authors introduce variable liquid crystal (LC) properties via ion beam (IB) irradiation on the ZrO2 layers. A uniform LC alignment characteristic was achieved on the ZrO2 thin film, and the pretilt angle was about 1.2°. We have shown that the pretilt angle can be controlled by changing ion beam parameters, such as the ion beam energy, the angle of incidence, and the irradiation time. The low pretilt angle for the nematic liquid crystal (NLC) on the ZrO2 thin film treated by ion beam irradiation could be adopted in planer alignment LCD liquid crystal display (LCD) applications as in-plane switching and fringe-field switching modes. The thermal stability of the ZrO2 thin film was sustained until 210°C. We also have shown that a liquid crystal cell aligned homogeneously by the ion beam irradiation exhibits the voltage-transmittance curve similar to that of a rubbed polyimide cell.",
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Inorganic layer for homogeneously aligned crystals using ion beam irradiation. / Kim, Byoung Yong; Park, Hong Gyu; Kim, Young Hwan; Han, Jeong Min; Seo, Dae Shik.

In: Molecular Crystals and Liquid Crystals, Vol. 550, 18.11.2011, p. 38-44.

Research output: Contribution to journalArticle

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AU - Kim, Byoung Yong

AU - Park, Hong Gyu

AU - Kim, Young Hwan

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AU - Seo, Dae Shik

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AB - The authors introduce variable liquid crystal (LC) properties via ion beam (IB) irradiation on the ZrO2 layers. A uniform LC alignment characteristic was achieved on the ZrO2 thin film, and the pretilt angle was about 1.2°. We have shown that the pretilt angle can be controlled by changing ion beam parameters, such as the ion beam energy, the angle of incidence, and the irradiation time. The low pretilt angle for the nematic liquid crystal (NLC) on the ZrO2 thin film treated by ion beam irradiation could be adopted in planer alignment LCD liquid crystal display (LCD) applications as in-plane switching and fringe-field switching modes. The thermal stability of the ZrO2 thin film was sustained until 210°C. We also have shown that a liquid crystal cell aligned homogeneously by the ion beam irradiation exhibits the voltage-transmittance curve similar to that of a rubbed polyimide cell.

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