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반사광 측정 모드에서 금과 은을 사용한 이층 금속 칩과 삼층 금속 칩의 특성 연구
김형진,김창득,손영수,Kim, Hyungjin,Kim, Chang-duk,Sohn, Young-Soo 한국센서학회 2016 센서학회지 Vol.25 No.2
Characteristics of the conventional gold (Au) surface plasmon resonance (SPR) chip, bi-metallic(Au/silver (Ag)) SPR chip, and tri-metallic(Au/Ag/Au) SPR chip were investigated and compared in the intensity measurement mode for the enhancement of SPR image sensor reactivity. Reflectance curves of the Au, bi- and tri-metallic SPR chips were acquired in phosphate-buffered saline (PBS) solution and were compared. The line width of the reflectance curve of the bi-metallic chip was the narrowest among the three different types of the chips. Also, the tangential slope of the bi-metallic chip was steeper than those of the other chips. Various concentrations of bovine serum albumin (BSA) were utilized in the SPR experiment. As a result, among the above three chips reflectance variation value of the bi-metallic chip was the largest.
열전도성 플라스틱을 적용한 자동차 LED 전조등 방열구조 연구
김형진,이동규,박현정,양회석,나필선,곽준섭,Kim, Hyeong Jin,Lee, Dong Kyu,Park, Hyun Jung,Yang, Hoe Seok,Na, Pil Sun,Kwak, Joon Seop 한국전기전자재료학회 2015 전기전자재료학회논문지 Vol.28 No.8
Since LEDs (light emitting diodes) have many advantages as a light source in vehicle headlamp, such as good reliability, energy and space saving, and flexible headlamp design. On the other hand, the dependence of its performance and life on temperature have great influence on its practical use. In this study, design and fabrication of heat sink for vehicle LED headlamp were performed using thermally-conductive plastics. This study focused on the effective heat sink structure with limited space in the vehicle LED headlamp. We designed two different prototype of heat sink by thermal simulation using SolidWorks program, which had excellent temperature characteristics. The two different prototype of heat sink were fabricated by injection molding with thermally-conductive plastics. The results showed that LED $T_j$ (junction temperature) of sample B (model 1) and sample C (model 1, 2) was below then $165^{\circ}C$ when applying the thermally-conductive plastics in heat sink of vehicle LED headlamp.
김형진,Kim, Hyeong-Jin 한국골판지포장공업협동조합 2009 골板紙包裝ㆍ物流 Vol.86 No.-
환경호르몬은 신체내 호르몬과 유사한 구조를 띄고 있어 인체안에 유입되었을 때 분해 배출되지 않고 마치 호르몬과 같이 작용한다고 하여 환경호르몬이라 부르며, 신체에 큰 영향을 미치는 물질로서 환경유해물질관련 유럽을 중심으로 환경규제가 강화되고 있으며, 국내에서도 환경호르몬에 대한 관심도가 높아지고 있는 현실에서 이에 대한 대응책 마련에 앞서 환경호르몬 종류와 규제실태를 점검하고자 한다.