• Study on Planar Orientation and Selective Reflection of Cholesteric Liquid Crystals
  • Jung G, Seo I, Lee M, Choi SW, Song K
  • 콜레스테릭 액정의 Planar 배열과 선택 반사 특성에 관한 연구
  • 정갑하, 서인선, 이몽룡, 최석원, 송기국
Abstract
FTIR spectroscopy has been employed in order to quantitatively investigate the relationship between planar arrangements and selective reflectance of cholesteric liquid crystals. It was found that the selective reflection was enhanced as the amount of planar arrangements in cholesteric liquid crystals increased. Although the planar arrangements of cholesteric liquid crystals can be induced only by the shear force effect, it was more effective to use the alignment layer to obtain the perfect planar arrangements.

선택 반사를 보이는 콜레스테릭 액정의 planar 배열과 선택적 반사 효율과의 연관성에 대하여 FTIR spectroscopy를 이용하여 정량적으로 조사하였다. Cholesteric liquid crystal(CLC) 내 planar 배열이 잘 유도될수록 선택 반사율이 높아짐을 알 수 있었고, 배향막을 사용하지 않고 shear force 효과에 의해서만 planar 배열을 유도할 수 있었지만 완전한 planar 배열을 유도하기 위해서는 배향막을 사용하는 것이 효과적이었다.

Keywords: cholesteric liquid crystals; planar arrangement; selective reflection; FTIR

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This Article

  • 2010; 34(3): 242-246

    Published online May 25, 2010

  • Received on Dec 30, 2009
  • Accepted on Mar 12, 2010