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Designing Outside the Box: Unlocking the Geometric Freedom of Melt Electrowriting using Microscale Layer Shifting

Please always quote using this URN: urn:nbn:de:bvb:20-opus-217974
  • Melt electrowriting, a high‐resolution additive manufacturing technology, has so far been developed with vertical stacking of fiber layers, with a printing trajectory that is constant for each layer. In this work, microscale layer shifting is introduced through deliberately offsetting the printing trajectory for each printed layer. Inaccuracies during the printing of sinusoidal walls are corrected via layer shifting, resulting in accurate control of their geometry and mechanical properties. Furthermore, more substantial layer shifting allowsMelt electrowriting, a high‐resolution additive manufacturing technology, has so far been developed with vertical stacking of fiber layers, with a printing trajectory that is constant for each layer. In this work, microscale layer shifting is introduced through deliberately offsetting the printing trajectory for each printed layer. Inaccuracies during the printing of sinusoidal walls are corrected via layer shifting, resulting in accurate control of their geometry and mechanical properties. Furthermore, more substantial layer shifting allows stacking of fiber layers in a horizontal manner, overcoming the electrostatic autofocusing effect that favors vertical layer stacking. Novel nonlinear geometries, such as overhangs, wall texturing and branching, and smooth and abrupt changes in printing trajectory are presented, demonstrating the flexibility of the layer shifting approach beyond the state‐of‐the‐art. The practice of microscale layer shifting for melt electrowriting enables more complex geometries that promise to have a profound impact on the development of products in a broad range of applications.show moreshow less

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Metadaten
Author: Ievgenii Liashenko, Andrei Hrynevich, Paul D. Dalton
URN:urn:nbn:de:bvb:20-opus-217974
Document Type:Journal article
Faculties:Medizinische Fakultät / Abteilung für Funktionswerkstoffe der Medizin und der Zahnheilkunde
Language:English
Parent Title (English):Advanced Materials
Year of Completion:2020
Volume:32
Issue:28
Article Number:2001874
Source:Advanced Materials 2020, 32(28):2001874. DOI: 10.1002/adma.202001874
DOI:https://doi.org/10.1002/adma.202001874
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 60 Technik / 600 Technik, Technologie
Tag:3D printing; additive manufacturing; biomaterials; electrohydrodynamics; melt electrospinning writing
Release Date:2021/08/18
Licence (German):License LogoCC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International