Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31188
Title: Sharp tipped plastic hollow microneedle array by microinjection moulding
Authors: Yung, KL 
Xu, Y
Kang, C
Liu, H
Tam, KF
Ko, SM
Kwan, FY
Lee, TMH 
Issue Date: 2012
Publisher: IOP Publishing Ltd
Source: Journal of micromechanics and microengineering, 2012, v. 22, no. 1, 15016 How to cite?
Journal: Journal of Micromechanics and Microengineering 
Abstract: A method of producing sharp tipped plastic hollow microneedle arrays using microinjection moulding is presented in this paper. Unlike traditional approaches, three mould inserts were used to create the sharp tips of the microneedles. Mould inserts with low surface roughness were fabricated using a picosecond laser machine. Sharp tipped plastic hollow microneedles 500 ?hm in height were fabricated using a microinjection moulding machine developed by the authors group. In addition, the strength of the microneedle was studied by simulation and penetration experiments. Results show that the microneedles can penetrate into skin, delivering liquid successfully without any breakage or severe deformation. Techniques presented in this paper can be used to fabricate sharp tipped plastic hollow microneedle arrays massively with low cost.
URI: http://hdl.handle.net/10397/31188
ISSN: 0960-1317
DOI: 10.1088/0960-1317/22/1/015016
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