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Article

Improving Compactness of 3D Metallic Microstructures Printed by Laser-Induced Forward Transfer

1
Faculty of Engineering and the Nanotechnology Center, Bar-Ilan University, Ramat-Gan 5290002, Israel
2
Additive Manufacturing Lab, Orbotech Ltd., P.O. Box 215, Yavne 8110101, Israel
3
Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat-Gan 5290002, Israel
*
Author to whom correspondence should be addressed.
Crystals 2021, 11(3), 291; https://doi.org/10.3390/cryst11030291
Received: 15 February 2021 / Revised: 8 March 2021 / Accepted: 11 March 2021 / Published: 16 March 2021
Laser-induced forward transfer (LIFT) has been shown to be a useful technique for the manufacturing of micron-scale metal structures. LIFT is a high-resolution, non-contact digital printing method that can support the fabrication of complex shapes and multi-material structures in a single step under ambient conditions. However, LIFT printed metal structures often suffer from inferior mechanical, electrical, and thermal properties when compared to their bulk metal counterparts, and often are prone to enhanced chemical corrosion. This is due mostly to their non-compact structures, which have voids and inter-droplet delamination. In this paper, a theoretical framework together with experimental results of achievable compactness limits is presented for a variety of metals. It is demonstrated that compactness limits depend on material properties and jetting conditions. It is also shown how a specific choice of materials can yield compact structures, for example, when special alloys are chosen along with a suitable donor construct. The example of printed amorphous ZrPd is detailed. This study contributes to a better understanding of the limits of implementing LIFT for the fabrication of metal structures, and how to possibly overcome some of these limitations. View Full-Text
Keywords: laser-induced forward transfer; 3D metal printing; additive manufacturing; printing of micro-electronics devices; metal glass; improved properties laser-induced forward transfer; 3D metal printing; additive manufacturing; printing of micro-electronics devices; metal glass; improved properties
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MDPI and ACS Style

Gorodesky, N.; Sedghani-Cohen, S.; Fogel, O.; Silber, A.; Tkachev, M.; Kotler, Z.; Zalevsky, Z. Improving Compactness of 3D Metallic Microstructures Printed by Laser-Induced Forward Transfer. Crystals 2021, 11, 291. https://doi.org/10.3390/cryst11030291

AMA Style

Gorodesky N, Sedghani-Cohen S, Fogel O, Silber A, Tkachev M, Kotler Z, Zalevsky Z. Improving Compactness of 3D Metallic Microstructures Printed by Laser-Induced Forward Transfer. Crystals. 2021; 11(3):291. https://doi.org/10.3390/cryst11030291

Chicago/Turabian Style

Gorodesky, Niv, Sharona Sedghani-Cohen, Ofer Fogel, Amir Silber, Maria Tkachev, Zvi Kotler, and Zeev Zalevsky. 2021. "Improving Compactness of 3D Metallic Microstructures Printed by Laser-Induced Forward Transfer" Crystals 11, no. 3: 291. https://doi.org/10.3390/cryst11030291

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