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ESD 전극을 이용한 분무코팅 균일도 개선에 관한 연구
당현우(Hyun-Woo Dang),양성욱(Seong-Wook Yang),도양회(Yang-Hoi Doh),최경현(Kyung-Hyun Choi) 한국기계가공학회 2016 한국기계가공학회지 Vol.15 No.2
In this study, experiments are conducted to improve spray coating uniformity by using second and third electrodes based on the electrospray atomization mechanism. The uniformity of fabricated thin films can be improved by adjusting the design of the second electrode. The implementation of the second electrode with an elongated hole and a bending angle of 90° results in highly uniform films. In addition, induced area to substrate is increased by lowering the applied voltage using the third electrode with a round rod shape. A linear correlation between applied voltage and induced area is confirmed. Thin film thickness and surface roughness are measured after the fabrication of thin films through the electrospray process. It is confirmed that a thin film is formed having an average thickness of 273.44 ㎚, a thickness uniformity of less than 10%, and a surface roughness of 3 ㎚.
정전기력 분무 공정 기반 마스크 패터닝 시스템 기술 개발
최경현(Kyung-Hyun Choi),당현우(Hyun-Woo Dang),김형찬(Hyung-Chan Kim),고정범(Jeong-Beom Ko),도양회(Yang-Hoe Doh),김동수(Dong-Soo Kim) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
An environmental-friendly spray deposition is different from commercially available deposition techniques like piezo, thermal, and aerosol. Through electrostatically controlled conductive inks, patterns can be achieved on substrate by using submicron mask. In this study a novel process of selective patterning is implemented. This paper discusses an optimized system design for analysis of process variables by electro pray deposition. Colloidal solution contained in a metallic capillary head driven by electrostatic force verified mask patterning experimentally.