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Three-dimensional microstructure using partitioned cross-sections in projection microstereolithography

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Abstract

Microstereolithography (μSL) is similar to the conventional stereolithography process and allows the fabrication of complex microstructures with high aspect ratios. In the projection μSL process, each layer is fabricated by one irradiation of the light which has a cross-sectional shape. At this time, the fabrication range is limited by the field of view of pattern generator (LCD or DMD) and the magnification of the objective lens. In this study, we propose a partitioned cross-section method for expanding the fabrication range while maintaining the fabrication resolution in the projection μSL system. A cross-section is partitioned into several sub-sections, having required size in the pattern generator. Then, the shaped light corresponding to sub-section is irradiated at specific position on the resin surface, and cured sub-sections make completed cross-section. The procedure for generating a series of sub-sections has been presented. Using this method, some microstructures have been fabricated.

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Authors and Affiliations

  1. School of Mechanical Engineering, Pusan National University, Busan, South Korea, 609-735

    Young-Myoung Ha, In-Baek Park & Seok-Hee Le

  2. School of Mechanical Engineering, Andong National University, Andong, South Korea, 760-749

    Ho-Chan Kim

Authors
  1. Young-Myoung Ha
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  2. In-Baek Park
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  3. Ho-Chan Kim
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  4. Seok-Hee Le
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Correspondence to Seok-Hee Le.

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Ha, YM., Park, IB., Kim, HC. et al. Three-dimensional microstructure using partitioned cross-sections in projection microstereolithography. Int. J. Precis. Eng. Manuf. 11, 335–340 (2010). https://doi.org/10.1007/s12541-010-0039-7

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  • DOI: https://doi.org/10.1007/s12541-010-0039-7

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