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CBD법에 위한 ZnO 마이크로 막대 구조체의 2차원 배열 및 수직정렬
이역규,남효덕,이상환,전찬욱,Lee, Yeok-Kyoo,Nam, Hyo-Duk,Lee, Sang-Hwan,Jeon, Chan-Wook 한국전기전자재료학회 2009 전기전자재료학회논문지 Vol.22 No.8
A periodic away of zinc oxide(ZnO) micro-rods as fabricated by using chemical bath deposition and photo-lithography. Vertically aligned ZnO micro-rods array was successfully grown by chemical bath deposition method on ZnO seed layer. The ZnO seed layer was deposited on glass and the patterning was made by standard photo-lithography technique. The selective growth of ZnO micro-rods as achieved with the masked ZnO seed layer. The fabricated ZnO micro rods were found to be single crystalline and have grown along hexagonal c-axis direction of (0002) which is same as the preferred growth orientation of ZnO seed layer.
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이역규,남효덕 嶺南大學校 工業技術硏究所 2002 工業技術硏究所論文集 Vol.30 No.2
This paper describes the performance of the rack-pinion rotating cylinder after the material of the piston gear was substituted aluminum alloy for nylon plastic with 30 % glass fiber. The on-off control system of rack-pinion rotating cylinder was designed for measuring output torque, efficiency and on-off time depending on working pressure and inner radius of cylinder. By replacing aluminum alloy with nylon plastic, of this research results showed the output torque enhancement by 0.5∼3.0 %, the on-off time reduction by 0.1∼2.0 second, and the efficiency improvement by 0.2∼1.8 %. Improving output torque from ths research enabled rack-pinion rotating cylinder to small size and reduction of the on-off time enlarged the range of speed regulation.
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장호경,이역규 경산대학교 기초과학연구소 2001 基礎科學 Vol.5 No.2
본 연구에서는 공압작동식 랙-피니언 회전실린더의 피스톤 기어 재질 특성에 관하여 연구하였다. 랙-피니언 회전실린더의 동작 성능에 중요한 피스톤 기어의 재질을 알루미늄 합금에서 유리섬유가 첨가된 나일론 플라스틱으로 교체하였다. 나일론 플라스틱은 알루미늄 합금에 비해 상대적으로 낮은 비중과 가공공정의 용이성 및 원가절감의 효과를 기대할 수 있지만, 내구성에 문제가 있다. 따라서 내구성에 대한 타당성 검증과 최적의 유리섬유 첨가량을 결정하기 위해 나일론 플라스틱에 유리섬유 첨가량을 변화시켜 인장강도, 충격강도 및 굽힘 강도를 측정하였다. The characteristics of material for the piston gear of the pneumatically operated rack-pinion rotating cylinder were studied. The material of piston gear was replaced aluminum alloy with nylon plastic for the operation performance of rack-pinion rotating cylinder. The properties of nylon plastic were the low specific gravity, easiness of manufacturing process and effect of cost reduction. In this paper, the tensile strength, impact strength and flexural strength were measured according to glass fiber percentage for the feasibility inspection of the fabricated piston gear.
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