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송재용(J. Y. Song),길경석(G. S. Kil),신광철(G. C. Shin),박종국(J. K. Park),심재원(J. W. Sim) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-
In this study, a ubiquitous sensor for condition monitoring of insulators and lightning arresters installed in power distribution lines and electric traction vehicles is presented. The sensor consists of two parts; a leakage current measurement and a lightning surge detection. Measured data are transmitted to a supervisory computer through ZigBee protocol based on IEEE 802.15.4. To detect leakage current, a window type Mn-ZCT is used and a low-noise amplifier with a gain of 60 ㏈ is designed, and this can measure leakage current in ranges of 100 ㎂ ~ 5 ㎃. A sample-hold (S/H) and a Rogowski coil are injected to analyze the magnitude of surge current in ranges from 500 A to 10 ㎄ with 8/20 ㎲-waveform.
플라즈마 공중합 고분자 절연막과 펜타센 반도체막의 계면특성
신백균(Paik-Kyun Shin),임헌찬(H-C Lim),육재호(J-H Yuk),박종관(J-K Park),조기선(G-S Jo),남광우(K-Y Nam),박종국(J-K Park),김용운(Y-W Kim),정무영(M-Y Chung) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
Thin films of pp(ST-Co-VA) were fabricated by plasma deposition polymerization (PVDPM) technique. Properties of the plasma polymerized pp(ST-Co-VA) thin films were investigated for application to semiconductor device as insulator. Thickness, dielectric property, composition of the pp(ST-Co-VA) thin films were investigated considering the relationship with preparation condition such as gas pressure and deposition time. In order to verify the possibility of application to organic thin film transistor, a pentacene thin film was deposited on the pp(ST-Co-VA) insulator by vacuum thermal evaporation technique. Crystalline property of the pentacene thin film was investigated by XRD and SEM, FT-IR. Surface properties at the pp(ST-Co-VA)/pentacene interface was investigated by contact angle measurement. The pp(ST-Co-VA) thin film showed a high-k (k=4.6) and good interface characteristic with pentacene semiconducting layer, which indicates that it would be a promising material for organic thin film transistor (OTFT) application.