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A Method to Fabricate Low-Cost and Large Area Vitreous Carbon Mold for Glass Molded Microstructures
주종현,Sera Lim,석종원,김석민 한국정밀공학회 2015 International Journal of Precision Engineering and Vol.16 No.2
A method to fabricate a vitreous carbon (VC) mold for glass molded microstructures was investigated by replicating a microstructuredfuran precursor and carbonization process. The composition of a furan-based thermal curable polymer was optimized along with theprocessing parameters of thermal curing and carbonization processes to improve the surface quality of microcavities on the VC mold. The engineering feasibility of the proposed method was ensured by successfully molding glass micro-grating structures with a pitchof ~46.3 μm and a height of ~3.8 μm using the fabricated VC molds.
목표 지향적 행동모델을 적용한 관객의 공연예술 관람 행동의도에 대한 연구
주종현 ( Jong-hyun Joo ),윤미라 ( Mi-ra Yoon ) 대한무용학회 2017 대한무용학회논문집 Vol.75 No.2
This study aimed to make an empirical investigation of the precedence factors of behavioral intention for watching of an audience by applying the model of goal-directed behavior. The result shows that while attitudes toward watching and positive expectations have a significant positive(+) effect in all the categories including plays, musicals, and the entire sample, negative expectations and frequency of viewing in the past had no significant effect in all the three categories. Also, the MGB has secured a high level of explanatory power that can predict at least 75.6% of behavioral intention for viewing of an audience of performing arts.
주종현(Jonghyeon Ju),임세라(Sela Lim),김석민(Seok-min Kim),석종원(Jongwon Seok) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
A novel approach is proposed to fabricate a glassy carbon mold with micro cavities for precision glass molding of micro structures. A master pattern was fabricated by photo lithography technique and a mold for casting the furan resin was prepared by PDMS replication process. The furan resin was poured on the PDMS mold and carefully cured in vacuum condition for minimizing the micro pores. Finally, the fabricated polymer precursor was pyrolysized in the inert atmosphere at high temperature and turn to the glassy carbon mold with micro cavities. To minimize the mechanical deformation and degradation of surface properties due to the micro pores, the contents of monomer, initiator, and solvent for precursor, and the processing conditions in the curing and the carbonization stages were optimized. We also analyzed the effects of material contents and processing conditions on the weight loss and volumetric shrinkage during the curing and carbonization processes.