• Title/Summary/Keyword: electrical & electronic engineering

Search Result 11,709, Processing Time 0.084 seconds

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
    • /
    • v.8 no.1
    • /
    • pp.46-50
    • /
    • 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.

Battery Diagnosis by using Impedance Measurement System based on Labview (배터리 수명진단을 위한 LabView 기반 임피던스 측정 시스템)

  • Kim, Seon Hyeog;Lee, Hyeong Min;Kwon, Gu-Young;Cho, Woojin;Park, Injun;Choi, Woo-Jun;Chae, Youngcheol;Shin, Yong-June
    • Proceedings of the KIEE Conference
    • /
    • 2015.07a
    • /
    • pp.605-606
    • /
    • 2015
  • 본 논문에서는 배터리의 상태 진단을 위한 임피던스 측정시스템을 제시한다. Labview를 이용한 임피던스 측정 시스템은 저가에서 구성할 수 있고, 변화되는 임피던스를 확인이 가능해 수명을 진단하는 지표로 이용 가능하다. 제시된 임피던스 측정 방법은 용량에 상관없이 측정이 가능하고, 기존의 장치보다 측정과 값을 계산하기가 간단하다. 또한, 고가의 장비를 이용하지 않고도, Labview와 DAQ를 이용하여 정확성 높은 결과를 구할 수 있다.

  • PDF

Mapping of Fine Grayscale Data into the sRGB Color Space

  • Kikuchi, Hisakazu;Sto, Hiroto;Hasebe, Satoshi;Mizutani, Naoki;Muramatsu, Shogo;Sasaki, Shigenobe;Zhou, Zie;Sekine, Seishi;Abe, Yoshito;Nakashizuka, Makoto
    • Proceedings of the IEEK Conference
    • /
    • 2002.07b
    • /
    • pp.987-990
    • /
    • 2002
  • Fine grayscale data exceeding 8 bits per pixel is mapped into the sRGB color space so as to be displayed on a 24-bit sRGB CRT monitor. The characteristics of the pseudo gray generated by mapping are investigated in terms of the CIELAB color difference and chromaticities.

  • PDF