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디지털마이크로미러 소자를 이용한 마이크로광조형 기술개발
주재영(J. Y. Joo),김성훈(S. H. Kim),정성호(S. H. Jeong) 한국정밀공학회 2005 한국정밀공학회 학술발표대회 논문집 Vol.2005 No.10월
In order to increase productivity in conventional stereolithography, Microstereolithography using a digital micromirror device (DMD™) as a dynamic patter generator is proposed. The deviation from a lovel of clear optical imges to a level of a photopolymer surface is a key for the fabrication of an accureate 3D structure. so this deviation is minimized by controlling the viscosity of FA1260T with organic solvents. After finding the appropriate process valuables (exposure time of optical images, layer thickness of each layer), the feasibility of microstructures such as a microgear and a microsphere is then demonstratded. Microstereolithography with DMD™ might eventually replace conventional laser induced microstereolithography market such as in the mansufacturing of jewels and medical parts.
미세 3차원 구조물 제조를 위한 디지털 마이크로미러소자 응용 마이크로 광조형
주재영(J. Y. Joo),김성훈(S. H. Kim),정성호(S. H. Jeong) 한국레이저가공학회 2006 한국레이저가공학회지 Vol.9 No.1
In order to increase the productivity of conventional microstereolithography (MSL), digital micromirror device (DMD™) based MSL is proposed and the feasibility of 3D microcomponents fabrication is demonstrated in two ways; free surface and constrained surface techniques. The clearness of optical images at the exposure plane was confirmed for the fabrication of an accurate 3D structure by controlling the dynamic viscosity of FA1260T and the shape accuracy of a structure fabricated with epoxy-based resin (Somos? 10120) was analyzed to determine the optimum curing conditions. After finding the appropriate process variables, the feasibility of multiple microstructures is then demonstrated. Due to the high productivity, MSL using DMD™ showed the potential to replace the existing focused laser beam MSL.