Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Replication of Microstructured Surfaces by Microinjection Molding

초소형사출성형 공정을 이용한 마이크로 구조 표면의 성형

  • 이봉기 (포항공과대학교 기계공학과) ;
  • 김영배 (LG 전자 디지털어플라이언스 사업본부 DAC 연구소) ;
  • 권태헌 (포항공과대학교 기계공학과)
  • Published : 2009.09.01
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Abstract

In the present study replication of microstructured surfaces by microinjection molding was carried out. For a fabrication of mold inserts, nickel microstructures having various characteristic dimensions were fabricated by nickel electroforming onto Si mother microstructures. In addition, reverse nickel microstructures based on the electroformed nickel microstructures were successfully realized by electroforming with passivation process. The fabricated nickel microstructures were used as mold inserts for a replication of microstructured surfaces by microinjection molding. Microinjection molding experiment was carried out under three different processing conditions, which revealed effects of a packing stage and mold wall temperature. The microinjection-molded microstructured surfaces were characterized by using an atomic force microscope (AFM). It was found that mold wall temperature could enhance replication quality resulting in the precise microstructured surfaces.

Keywords

References

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