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Processing parameters investigation for the fabrication of self-supported and freeform polymeric microstructures using ultraviolet-assisted three-dimensional printing

Rouhollah Dermanaki Farahani, Louis Laberge Lebel, Daniel Therriault

Article (2014)

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Abstract

The ultraviolet-assisted 3D printing (UV-3DP) was used to manufacture photopolymer-based microdevices with 3D self-supported and freeform features. The UV-3DP technique consists of the robotized deposition of extruded filaments, which are rapidly photopolymerized under UV illumination during the deposition process. This paper systematically studies the processing parameters of the UV-3DP technique using two photo-curable polymers and their associated nanocomposite materials. The main processing parameters including materials' rheological behavior, deposition speed and extrusion pressure, and UV illumination conditions were thoroughly investigated. A processing map was then defined in order to help choosing the proper parameters for the UV-3D printing of microstructures with various geometries. Compared to self-supported features, the accurate fabrication of 3D freeform structures was found to take place in a narrower processing region since a higher rigidity of the extruded filament was required for structural stability. Finally, various 3D self-supported and freeform microstructures with high potential in micro electromechanical systems, micro-systems and organic electronics were fabricated to show the capability of the technique.
Subjects: 1700 Design and manufacturing > 1702 Advanced manufacturing
2100 Mechanical engineering > 2100 Mechanical engineering
Department: Department of Mechanical Engineering
Research Center: CREPEC - Center for Applied Research on Polymers and Composites
LM2 - Laboratory for Multi-scale Mechanics
Funders: FQRNT (Le Fonds Québécois de la Recherche sur la Nature et les Technologies)
PolyPublie URL: https://publications.polymtl.ca/10406/
Journal Title: Journal of Micromechanics and Microengineering (vol. 24, no. 5)
Publisher: IOP Publishing Ltd
DOI: 10.1088/0960-1317/24/5/055020
Official URL: https://doi.org/10.1088/0960-1317/24/5/055020
Date Deposited: 01 Aug 2022 11:40
Last Modified: 15 Nov 2022 12:45
Cite in APA 7: Farahani, R. D., Laberge Lebel, L., & Therriault, D. (2014). Processing parameters investigation for the fabrication of self-supported and freeform polymeric microstructures using ultraviolet-assisted three-dimensional printing. Journal of Micromechanics and Microengineering, 24(5), 055020 (12 pages). https://doi.org/10.1088/0960-1317/24/5/055020

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