Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Polymer Replication Using Ultrasonic Vibration

초음파진동에너지를 이용한 고분자 마이크로구조물의 성형

  • 유현우 (부산대학교 기계공학부) ;
  • 이치훈 (부산대학교 기계공학부) ;
  • 고종수 (부산대학교 기계공학부, 부산대학교 정밀정형및금형가공연구소(ERC/NSDM)) ;
  • 신보성 (부산대학교 정밀정형및금형가공연구소(ERC/NSDM)) ;
  • 노치현 ((주)소닉스코리아)
  • Published : 2008.05.01
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Abstract

A new polymer replication technology using ultrasonic vibration is proposed and demonstrated. A commercial ultrasonic welder has been used in this experiment. Two different types of nickel molds have been fabricated: pillar type and pore type microstructures. Polymethyl methacrlylate (PMMA) has been used as the replication material and the optimal molding time was 2 sec and 2.5 sec for pillar-type and pore-type micromolds, respectively. Compared with the conventional polymer micromolding techniques, the proposed ultrasonic micromolding technique has the shortest processing time. In addition, only contact area between micromold and polymer substrate is melted so that the thermal shrinkage can be minimized. The fabricated PMMA microstructures have been very accurately replicated without vacuum. The proposed ultrasonic molding technique is a good alternative for high volume production.

Keywords

References

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Cited by

  1. Replication Characteristics of Micropatterns According to Mold Temperature in Ultrasonic Imprinting vol.38, pp.1, 2014, https://doi.org/10.3795/KSME-A.2014.38.1.051
  2. Replication of Polyethylene Nano-Microstructures Using Ultrasonic Forming vol.33, pp.11, 2009, https://doi.org/10.3795/KSME-A.2009.33.11.1209
  3. Replication of Hybrid Micropatterns Using Selective Ultrasonic Imprinting vol.39, pp.1, 2015, https://doi.org/10.3795/KSME-A.2015.39.1.071