Dynamic interface printing

Callum Vidler (), Michael Halwes, Kirill Kolesnik, Philipp Segeritz, Matthew Mail, Anders J. Barlow, Emmanuelle M. Koehl, Anand Ramakrishnan, Lilith M. Caballero Aguilar, David R. Nisbet, Daniel J. Scott, Daniel E. Heath, Kenneth B. Crozier and David J. Collins ()
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Callum Vidler: The University of Melbourne
Michael Halwes: The University of Melbourne
Kirill Kolesnik: The University of Melbourne
Philipp Segeritz: The University of Melbourne
Matthew Mail: The University of Melbourne
Anders J. Barlow: The University of Melbourne
Emmanuelle M. Koehl: The Royal Melbourne Hospital
Anand Ramakrishnan: The Royal Melbourne Hospital
Lilith M. Caballero Aguilar: The University of Melbourne
David R. Nisbet: The University of Melbourne
Daniel J. Scott: The Florey Institute
Daniel E. Heath: The University of Melbourne
Kenneth B. Crozier: The University of Melbourne
David J. Collins: The University of Melbourne

Nature, 2024, vol. 634, issue 8036, 1096-1102

Abstract: Abstract Additive manufacturing is an expanding multidisciplinary field encompassing applications including medical devices1, aerospace components2, microfabrication strategies3,4 and artificial organs5. Among additive manufacturing approaches, light-based printing technologies, including two-photon polymerization6, projection micro stereolithography7,8 and volumetric printing9–14, have garnered significant attention due to their speed, resolution or potential applications for biofabrication. Here we introduce dynamic interface printing, a new 3D printing approach that leverages an acoustically modulated, constrained air–liquid boundary to rapidly generate centimetre-scale 3D structures within tens of seconds. Unlike volumetric approaches, this process eliminates the need for intricate feedback systems, specialized chemistry or complex optics while maintaining rapid printing speeds. We demonstrate the versatility of this technique across a broad array of materials and intricate geometries, including those that would be impossible to print with conventional layer-by-layer methods. In doing so, we demonstrate the rapid fabrication of complex structures in situ, overprinting, structural parallelization and biofabrication utility. Moreover, we show that the formation of surface waves at the air–liquid boundary enables enhanced mass transport, improves material flexibility and permits 3D particle patterning. We, therefore, anticipate that this approach will be invaluable for applications where high-resolution, scalable throughput and biocompatible printing is required.

Date: 2024
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DOI: 10.1038/s41586-024-08077-6

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