Fabrication of 3-Dimensional Microstructures using Digital Micromirror Device

Digital Micromirror Device 를 이용한 3차원 마이크로구조물 제작

  • 최재원 (부산대학교 대학원 지능기계공학과) ;
  • 하영명 (부산대학교 대학원 지능기계공학과) ;
  • 최경현 (제주대학교 메카트로닉스공학과) ;
  • 이석희 (부산대학교 기계공학부 및 기계기술연구소)
  • Published : 2006.11.01

Abstract

MEMS and LIGA technologies have been used for fabricating microstructures, but their shape is not 3D because of difficulty for preparation of many masks. To fabricate 3D microstructures, microstereolithography technology based on Digital Micromirror Device($DMD^{TM}$) was introduced. It has no need of masks and is capable of fabricating high aspect ratio microstructures. In this technology, STL file is the standard format as the same of conventional rapid prototyping system, and 3D parts are fabricated by layer-by-layer according to 2D section sliced from STL file. The UV light source is illuminated to DMD which makes bitmap images of 2D section, and they are transferred and focused on resin surface. In this paper, we addressed optical design of microstereolithography system in consideration of light path according to DMD operation and image-forming on the resin surface using optical design program. To verify the performance of implemented microstereolithography system, 3D microstructures with complexity and high aspect ratio were fabricated.

Keywords

References

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