• Title/Summary/Keyword: Hall measurment

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The characteristic of AZO films deposition by new plasma source (새로운 플라즈마 소스를 이용한 Al doped ZnO 박막 연구)

  • Wen, Long;Piao, Jinxiang;Han, Jeon-Geon
    • Proceedings of the Korean Institute of Surface Engineering Conference
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    • 2014.11a
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    • pp.285-285
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    • 2014
  • 새로운 플라즈마 소스를 이용하여 Al doped ZnO (AZO) 박막을 증착하였다. 이 실험에서 박막의 증착두께를 200nm로 고정하였다. 인가전력, 공정압력 그리고 기판거리를 변수로 하였을 경우 AZO 박막의 방향성과 결정성을 XRD로 측정하고 분석하였고 박막의 전기적 특성을 Hall measurment로 측정하였다. 그 결과 인가파워가 2W/cm2, 공정압력이 2mTorr이고 기판거리가 2cm 일 때 박막의 전기적 특성이 가장 좋게 나타났다.

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A Study on the Parameters and Characteristic of Induction Motor driven by Inverter (인버터로 구동되는 유도전동기의 정수 및 특성에 관한 연구)

  • 전내석;김종윤;오진석;김윤식
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2000.05a
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    • pp.497-504
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    • 2000
  • This paper presents a method for the equivalent-circuit parameters and torque characteristics calculation of squirrel-cage induction motors. The measurment of motor parameters were calculated by the stator resistance test, the blocked rotor test and no load test through T type equivalent-circuit method. Especially, this paper describes the test results obtained by using hall sensor and strain gage for the current and the torque characteristics of induction motors. 1(HP), three-phase squirrel cage induction motor has been used during the test and the parameters are compared with those obtained by the maker parameters of simulation results and experiment.

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Deposition and Characterization of Graphene Materials Deposited through Thermal Chemical Vapor Deposition

  • Kwon, Kyoung-Woo;Bae, Seung-Muk;Yeop, Moon-Soo;Kim, Ji-Soo;Ko, Myong-Hee;Jung, Min-Wook;An, Ki-Seok;Hwang, Jin-Ha
    • Proceedings of the Korean Vacuum Society Conference
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    • 2012.08a
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    • pp.362-362
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    • 2012
  • Graphene-based materials have been gaining the unprecedented academic and industrial applications, due to the unique charge transport as a new kind of 2-dimensional materials. The applications incorporate electronic devices, nonvolatile memories, batteries, chemical sensors, etc. based on the electrical, mechanical, structural, optical, and chemical features newly reported. The current work employs thermal chemical vapor deposition involving H2 and CH4, in order to synthesize the 2-dimensional graphene materials. The qualitative/quantitative characterizations of the synthesized graphene materials are evaluated using Raman spectroscopy and Hall Measurements, In particular, the effect of processing variables is systematically investigated on the formation of graphene materials through statistical design of experiments. The optimized graphene materials will be attempted towards the potential applications to flat-panel displays.

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Modified magnetron sputtering for fast deposition of Al doped Znic oxide film

  • Wen, Long;Piao, Jinxiang;Kumar, Manish;Han, Jeon-Geon
    • Proceedings of the Korean Institute of Surface Engineering Conference
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    • 2015.05a
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    • pp.114-115
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    • 2015
  • 개량한 플라즈마 소스를 이용하여 Al doped ZnO (AZO) 박막을 증착하였다. 이 실험에서 박막의 증착두께를 200nm로 고정하였고 공정압력과 기판사이 거리는 4 mTorr과 4 cm로 정하였다. 인가전력 그리고 윗 타겟 인가전압을 변수로 하였을 경우 AZO 박막의 방향성과 결정성을 XRD로 측정하고 분석하였고 박막의 전기적 특성을 Hall measurment로 측정하였다. 그 결과 인가파워가 2W/cm2, 윗 타겟 인가전압이 0 W 일 때 박막의 전기적 특성이 가장 좋게 나타났다.

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