대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
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액정을 이용한 광자결정의 형성과 전기광학 효과

Electro-optic Behavior of Photonic Crystals with Nematic Liquid-Crystal

  • Kwon, Jang-Un (Department of Electrical Engineering, Soongsil University) ;
  • Han, Soon-Ku (Department of Electrical Engineering, Soongsil University) ;
  • Kang, Dae-Seung (Department of Electrical Engineering, Soongsil University)
  • 발행 : 2002.07.10
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초록

In this paper, we present a study of the structure and electro-optic behavior of hybrid liquid-crystal-silica sphere composite photonic crystals, formed by filling the (26% by volume) void space of fee (face centered cubic) silica opals infiltrated with a nematic liquid crystal. Three dimensional photonic crystals of visible range were fabricated via a self assembly method of silica spheres of submicron diameter. The expected fee structure was confirmed by scanning electron microscopy (SEM) of the dehydrated crystal with glass removed. The photonic crystal exhibited significant electric-field-induced shift of the optical Bragg reflection peak when the liquid crystal has the long molecular axis oriented parallel to the sphere surfaces.

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