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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
Korean Society for Precision Engineering Journal of the Korean Society for Precision Engineering 한국정밀공학회지 제21권 제3호
발행연도
2004.3
수록면
171 - 179 (9page)

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Micro-stereolithography technology has made it possible to fabricate a freefonn 3D microstructure. This technology is based on conventional stereolithography, in which a UV laser beam irradiates the open surface of a UV-curable liquid photopolymer, causing it to solidify. In micro-stereo lithography, a laser beam of a few ㎛ diameter is used to solidify a very small area of the photopolymer. This is one of the key technological elements, and can be achieved by using a focusing lens. Thus, the solidification phenomena of the liquid photopolymer must be carefully investigated. In this study, the photopolymer solidification phenomena in response to variations in the scanning pitch of a focused laser beam was investigated experimentally. The effect of layer thickness on the solidification width and depth was also examined. These studies were conducted under the conditions of relatively lower laser power and relatively higher scanning speed. Moreover, the photopolymer solidification phenomena for the relatively higher laser power and lower scanning speed was investigated, too. In this case, comparing to the case of lower laser power and higher scanning speed, the photopolymer absorbed large amount of irradiation energy of the laser beam. These results were compared with those obtained from a photopolymer solidification model. From these results, a new laser-scanning scheme was proposed according to the shape of the 3D model. Samples by each method were fabricated successfully.

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ABSTRACT
1. 서론
2. 실험장치 및 광 경화성 수지의 경화모델
3. 낮은 주사에너지에 의한 광 경화성 수지의 경화
4. 높은 주사에너지에 의한 광 경화성 수지의 경화
5. 두 가지 방법을 이용한 3 차원형상의 제작
6. 결론
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