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http://dx.doi.org/10.3795/KSME-A.2008.32.5.419

Polymer Replication Using Ultrasonic Vibration  

Yu, Hyun-Woo (부산대학교 기계공학부)
Lee, Chi-Hoon (부산대학교 기계공학부)
Ko, Jong-Soo (부산대학교 기계공학부, 부산대학교 정밀정형및금형가공연구소(ERC/NSDM))
Shin, Bo-Sung (부산대학교 정밀정형및금형가공연구소(ERC/NSDM))
Rho, Chi-Hyun ((주)소닉스코리아)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.32, no.5, 2008 , pp. 419-423 More about this Journal
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
Ultrasonic Molding; Nickel Mold; Electroforming; Polymer Replication; Microstructure; Polymethyl Methacrylate(PMMA);
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Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 1
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