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Light-sheet 3D microprinting via two-colour two-step absorption

High-speed high-resolution 3D printing of polymers is highly desirable for many applications, yet still technologically challenging. Today, optics-based printing is in the lead. Projection-based linear optical approaches have achieved high printing rates of around 106 voxels s-1, although at voxel v...

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Main Authors: Hahn, Vincent (Author) , Rietz, Pascal (Author) , Hermann, Frank (Author) , Müller, Patrick (Author) , Barner-Kowollik, Christopher (Author) , Schlöder, Tobias (Author) , Wenzel, Wolfgang (Author) , Blasco, Eva (Author) , Wegener, Martin (Author)
Format: Article (Journal)
Language:English
Published: 13 October 2022
In: Nature photonics
Year: 2022, Volume: 16, Issue: 11, Pages: 784-791
ISSN:1749-4893
DOI:10.1038/s41566-022-01081-0
Online Access:Resolving-System, lizenzpflichtig, Volltext: https://doi.org/10.1038/s41566-022-01081-0
Verlag, lizenzpflichtig, Volltext: https://www.nature.com/articles/s41566-022-01081-0
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Author Notes:Vincent Hahn, Pascal Rietz, Frank Hermann, Patrick Müller, Christopher Barner-Kowollik, Tobias Schlöder, Wolfgang Wenzel, Eva Blasco, Martin Wegener
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Summary:High-speed high-resolution 3D printing of polymers is highly desirable for many applications, yet still technologically challenging. Today, optics-based printing is in the lead. Projection-based linear optical approaches have achieved high printing rates of around 106 voxels s-1, although at voxel volumes of >100 μm3. Scanning-based nonlinear optical approaches have achieved voxel volumes of <1 μm3, but suffer from low printing speed or high cost because of the required femtosecond lasers. Here we present an approach that we refer to as light-sheet 3D laser microprinting. It combines image projection with an AND-type optical nonlinearity based on two-colour two-step absorption. The underlying photoresin is composed of 2,3-butanedione as the photoinitiator, (2,2,6,6-tetramethylpiperidin-1-yl)oxyl as the scavenger and dipentaerythritol hexaacrylate as the multifunctional monomer. Using continuous-wave laser diodes at 440 nm wavelength for projection and a continuous-wave laser at 660 nm for the light-sheet, we achieve a peak printing rate of 7 × 106 voxels s-1 at a voxel volume of 0.55 μm3.
Item Description:Gesehen am 26.10.2022
Physical Description:Online Resource
ISSN:1749-4893
DOI:10.1038/s41566-022-01081-0

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