Advective Assembler-Enhanced Support Bath Rotational Direct Ink Writing

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Author(s)Pleij, Tazio
Author(s)Bayles, Alexandra V.
Author(s)Vermant, Jan
Date Accessioned2024-05-10T19:24:22Z
Date Available2024-05-10T19:24:22Z
Publication Date2024-05-01
DescriptionThis article was originally published in Advanced Materials Technologies. The version of record is available at: https://doi.org/10.1002/admt.202400005. © 2024 The Authors. Advanced Materials Technologies published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
AbstractManufacturing intricately controlled, hierarchically distributed structures poses significant fabrication challenges, but is crucial for enhancing functionality in synthetic systems. A 3D printing technique combining advective assembly with rotational direct ink writing is developed and exploited to build topologically complex, multimaterial structures with high precision. A modular advective assembler printhead is fabricated and employed in the process. This flow-structuring device is designed with a complex network of internal channels that patterns flowing hydrogel-based inks, creating multi-layered filaments whose structures go well beyond conventional nozzle shape and size limitations. The composite filaments are extruded into a rotating support bath of Polyacrylic acid microgels. The rheology of the inks and support bath are critical to maintain print fidelity and integrity, and are characterized by linear and nonlinear bulk rheometry. Optimization of the materials creates a platform where curvilinear, multimaterial architectures are constructed without being constrained to slicing across X, Y, and Z axes. The versatility of this manufacturing platform is demonstrated by printing helical structures that undergo swelling-induced actuation. This processing method has the potential to significantly enhance additive manufacturing by enabling the production of intricate, multiscale composite structures with broad applicability in fields such as bioengineering, soft robotics, and functional composite materials.
SponsorThis work was supported by the ETH domain, Strategic Focus Area Advanced Manufacturing (SFA AM) project MANUFHAPTICS, and the authors thank Prof. Herbert Shea (EPFL), Prof. Dorina Opris (EMPA) and Prof. André Studart (ETHZ) for stimulating discussions. The authors would also like to thank Dr. Stephan Busato for his help in the synthesis and characterization of the dimethyl quinidinium acrylate and Lucas Bidoire for his help in the fluorescent imaging of the multi-phase filaments' cross-sections. The authors also acknowledged Dr. Kirill Fishman Feldman for his help across different phases of the practical work in the laboratory. Open access funding provided by Eidgenossische Technische Hochschule Zurich.
CitationT. Pleij, A. V. Bayles, J. Vermant, Advective Assembler-Enhanced Support Bath Rotational Direct Ink Writing. Adv. Mater. Technol. 2024, 2400005. https://doi.org/10.1002/admt.202400005
ISSN2365-709X
URLhttps://udspace.udel.edu/handle/19716/34368
Languageen_US
PublisherAdvanced Materials Technologies
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
Keywordsadditive manufacturing
Keywordsadvective assemblers
Keywordsdirect ink writing
Keywordsrheology
Keywordsrotational 3d printing
Keywordssupport bath
TitleAdvective Assembler-Enhanced Support Bath Rotational Direct Ink Writing
TypeArticle
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