• Title, Summary, Keyword: Electrical engineering

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Liquid Crystal Alignment Effects on Nitrogen-doped Diamond like Carbon Layer by Ion Beam Alignment Method

  • Han, Jeong-Min;Choi, Sung-Ho;Kim, Byoung-Yong;Han, Jin-Woo;Kim, Jong-Hwan;Kim, Young-Hwan;Hwang, Jeoung-Yeon;Lee, Sang-Keuk;Ok, Chul-Ho;Seo, Dae-Shik
    • Transactions on Electrical and Electronic Materials
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    • v.8 no.1
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    • pp.46-50
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    • 2007
  • We have studied the nematic liquid crystal (NLC) alignment effects on a nitrogen-doped diamond-like carbon (NDLC) thin film layer with ion beam irradiation. The pretilt angle for NLC on the NDLC surface with ion beam exposure was observed below 1 degree. Also, we had the good LC alignment characteristics on the NDLC thin films with ion beam exposure of 1800 eV. In thermal stability experiments, the alignment defect of the NLC on the NDLC surface with ion beam irradiation above annealing temperature of $250^{\circ}C$ can be observed. Therefore, the good thermal stability and LC alignment for NLC by ion beam aligned NDLC thin films can be achieved.

Electrical characteristic of ZnO, GaN nanowire network (ZnO, GaN 나노선 네트워크의 전기적 특성 연구)

  • Ahn, Seung-Eon;Kang, Byung-Hyun;Kim, Kang-Hyun;Chang, Yu-Jin;Pieh, Sung-Hoon;Kim, Nam-Hee;Lee, Jong-Su;Kim, Sang-Sig;Kim, Gyu-Tae
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.67-70
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    • 2003
  • 합성된 GaN, ZnO 나노선 네트워크를 이용하여 전류-전압 특성을 조사하고 정류성 특징을 가지는 나노선네트워크에 대해서는 다이오드의 이상지수를 측정하여 기존의 다이오드의 특성과 비교 분석하고 간단한 광 특성 측정을 하여 광전소자로서의 가능성도 확인해 보았다.

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