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정세진(Sejin Jung),임윤식(Yonnsik Lim),김정현(Junghyun Kim),최원석(Wonseok Choi) 대한전기학회 2017 전기학회논문지 P Vol.66 No.4
In this study, the characteristics of anti-pollution coatings on glass substrates through annealing treatment were investigated. To investigate the change of properties by coating method and number of annealing treatment, after the anti-pollution coating was performed on the surface of glass substrate in three ways, the annealing treatment was performed by setting three kinds of annealing treatment conditions. The annealing treatment method is a torch using gas, which is advantage in that it can be installed directly on the site in an easy way compared with a annealing treatment process which is generally difficult. The anti-pollution properties, contact angle, transmittance, hardness, and adhesion of films on glass substrate were measured under 9 conditions of combination of coating methods and annealing treatment conditions. It was confirmed that as the number of annealing treatment increases, the anti-pollution property of the film synthesized on glass substrate becomes better.
기능성 나노코팅 박막의 열처리 분위기에 따른 특성분석 및 오염방지 태양광 모듈제작
강현일(Hyunil Kang),신승권(Seung Kwon Shin),김형철(Hyungchul Kim),임윤식(Yonnsik Lim),유영식(Youngsik Yoo),정연호(Yeun-Ho Joung),김정현(Junghyun Kim),최원석(Won Seok Choi) 대한전기학회 2015 전기학회논문지 P Vol.64 No.3
We investigated that effects of annealing ambient on the characteristics of functional nano thin film synthesized on glass substrate. The functional nano thin films were annealed by using rapid thermal annealing (RTA) equipment in vacuum, oxygen and nitrogen ambient, respectively. The hardness of the functional nano thin films were measured by a standard hardness testing method (ASTM D3363) such as a H-9H, F, HB and B-6B pencil (Mitsubishi, Japan). Also, the adhesion of the functional nano thin films were measured by a standard adhesion testing method (ASTM D3359) using scotch tape (3M, Korea). The contact angle of the functional nano thin films was measured by a contact angle analyzer (Phoenix 300 Touch, S.E.O.). The optical property of functional nano thin films was measured via UV-visible spectroscopy (S-3100, Scinco).
김성윤(Sung-Yun Kim),강현일(Hyunil Kang),최원석(Won Seok Choi),정연호(Yeun-Ho Joung),임윤식(Yonnsik Lim),유영식(Youngsik Yoo),황현석(Hyun Suk Hwang),송우창(Woo-Chang Song) 대한전기학회 2014 전기학회논문지 P Vol.63 No.4
Graphite electrodes are used for secondary batteries, fuel cells, and super capacitors. Research is underway to increased the reaction area of graphite electrodes used carbon nanotube (CNT) and porous carbon. CNT is limited to device utilization in order to used a metal catalyst by lack of surface area to improve. In contrast carbon nanowall (CNW) is chemically very stable. So this paper, microwave plasma enhanced chemical vapor deposition (PECVD) system was used to grow carbon nanowall (CNW) on Si substrate with methane (CH₄) and hydrogen (H₂) gases. To find the growth properties of CNW according to the reaction gas ratio, we have changed the methane to hydrogen gas ratios (4:1, 2:1, 1:2, and 1:4). The vertical and surficial conditions of the grown CNW according to the gas ratios were characterized by a field emission scanning electron microscopy (FE-SEM) and Raman spectroscopy measurements showed structure variations.