Vertically aligned liquid crystal molecules on TiO 2 film treated by ion-beam irradiation

Iee Gon Kim, Hyun Jae Na, Hong Gyu Park, Young Hwan Kim, Byoung Yong Kim, Jeong Min Han, Tae Kyu Park, Dae-Shik Seo, Hong Il Yoon

Research output: Contribution to journalArticle

Abstract

In this paper, we describe the formation of vertically aligned liquid crystal molecules on TiO 2 films treated by ion-beam (IB) irradiation. Regular or irregular pretilt angles were achieved as a function of IB incident angle. Uniform alignment was obtained only at an incident angle of 45°. The contact angle, which is related to the surface energy, was measured to confirm the tendency of variation in the pretilt angle. In addition, the weak anchoring energy of LC molecules on IB-irradiated TiO 2 was ascertained by the thermal stability at low temperature.

Original languageEnglish
Article number080220
JournalJapanese journal of applied physics
Volume49
Issue number8 PART 1
DOIs
Publication statusPublished - 2010 Aug 1

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Liquid crystals
Ion beams
ion beams
liquid crystals
Irradiation
Molecules
irradiation
molecules
Interfacial energy
Contact angle
Thermodynamic stability
surface energy
tendencies
thermal stability
alignment
Temperature
energy

All Science Journal Classification (ASJC) codes

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

Cite this

Kim, Iee Gon ; Na, Hyun Jae ; Park, Hong Gyu ; Kim, Young Hwan ; Kim, Byoung Yong ; Han, Jeong Min ; Park, Tae Kyu ; Seo, Dae-Shik ; Yoon, Hong Il. / Vertically aligned liquid crystal molecules on TiO 2 film treated by ion-beam irradiation In: Japanese journal of applied physics. 2010 ; Vol. 49, No. 8 PART 1.
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Vertically aligned liquid crystal molecules on TiO 2 film treated by ion-beam irradiation . / Kim, Iee Gon; Na, Hyun Jae; Park, Hong Gyu; Kim, Young Hwan; Kim, Byoung Yong; Han, Jeong Min; Park, Tae Kyu; Seo, Dae-Shik; Yoon, Hong Il.

In: Japanese journal of applied physics, Vol. 49, No. 8 PART 1, 080220, 01.08.2010.

Research output: Contribution to journalArticle

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