Mechanical properties of 3D metallic microstructures printed by laser induced forward transfer

Laser induced forward transfer (LIFT) allows for the printing of high resolution metal structures, making it a promising technique for manufacturing functional devices. While the electrical properties of LIFT printed metal structures have been extensively studies, studies of their mechanical propert...

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Bibliographic Details
Published in:Procedia CIRP 2018, Vol.74, p.285-289
Main Authors: Fogel, O., Cohen, S.S., Kotler, Z., Zalevsky, Z.
Format: Article
Language:English
Subjects:
3D printing
additive manufactoring
Laser induced forward transfer
LIFT
Metalic microstructures
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Summary:Laser induced forward transfer (LIFT) allows for the printing of high resolution metal structures, making it a promising technique for manufacturing functional devices. While the electrical properties of LIFT printed metal structures have been extensively studies, studies of their mechanical properties, which are of much interest, are rather scarce. Here we explore the mechanical properties of 3D, high aspect ratio, LIFT printed copper and gold structures. The effective modulus of special test structures was determined by tracing the resonance frequencies under pulse excitation. The effective modulus was found to be ~x3 to x9 times lower than the bulk values. Such differences are attributed to both the porosity of the LIFT printed structures as well as to droplets interfacial properties.
ISSN:2212-8271
2212-8271
DOI:10.1016/j.procir.2018.08.112