Development of Microreplication Process - Micromolding

Yuan, Shu and Hung, NguyenPhu and Ngoi, Bryan Kok Ann and Ali, Mohammad Yeakub (2003) Development of Microreplication Process - Micromolding. Materials and Manufacturing Processes, 18 (5). pp. 731-751. ISSN 1042-6914

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Abstract

A microreplication process, micromolding, was developed to replicate three-dimensional microcomponents. It included modifying a conventional molding machine, developing a thermal control unit to control the mold temperature, and developing a vacuum unit to evacuate the microcavity before filling it with plastic melt. Focused ion beam sputtering, a maskless patterning of material, was used to fabricate a microcavity that was then used as a mold insert. Feasibility of the micromolding process was investigated by simulation, and results were verified with the replication of polymer microcomponents (e.g., microgear, gear-train). Commercial simulation software was used to reveal possible issues in micromolding by integrating the microcomponent with a larger base. The simulations predict the filling time, pressure distribution, volumetric shrinkage, stress distribution, etc., of the microcomponent.

Item Type:	Article (Journal)
Additional Information:	4751/27109
Uncontrolled Keywords:	Focused ion beam, Microcavity, Microcomponent, Microfabrication, Microfeature, Microgear, Micromachining, Micromolding, Micropart, Microreplication, Microsystem, Process, Simulation, Sputtering, Surface roughness
Subjects:	T Technology > TS Manufactures
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Prof. Ir. Dr. Mohammad Yeakub Ali
Date Deposited:	23 Jul 2013 15:09
Last Modified:	23 Jul 2013 15:09
URI:	http://irep.iium.edu.my/id/eprint/27109

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