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

• Verfasst von: Hahn, Vincent [VerfasserIn]
• Verfasst von: Rietz, Pascal [VerfasserIn]
• Verfasst von: Hermann, Frank [VerfasserIn]
• Verfasst von: Müller, Patrick [VerfasserIn]
• Verfasst von: Barner-Kowollik, Christopher [VerfasserIn]
• Verfasst von: Schlöder, Tobias [VerfasserIn]
• Verfasst von: Wenzel, Wolfgang [VerfasserIn]
• Verfasst von: Blasco, Eva [VerfasserIn]
• Verfasst von: Wegener, Martin [VerfasserIn]
• Titel: Light-sheet 3D microprinting via two-colour two-step absorption
• Verf.angabe: Vincent Hahn, Pascal Rietz, Frank Hermann, Patrick Müller, Christopher Barner-Kowollik, Tobias Schlöder, Wolfgang Wenzel, Eva Blasco, Martin Wegener
• E-Jahr: 2022
• Jahr: 13 October 2022
• Umfang: 8 S.
• Fussnoten: Gesehen am 26.10.2022
• Titel Quelle: Enthalten in: Nature photonics
• Ort Quelle: London [u.a.] : Nature Publ. Group, 2006
• Jahr Quelle: 2022
• Band/Heft Quelle: 16(2022), 11, Seite 784-791
• ISSN Quelle: 1749-4893
• DOI: doi:10.1038/s41566-022-01081-0
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Laser material processing
• Sach-SW: Lithography
• Sach-SW: Metamaterials
• Sach-SW: Photochemistry
• Sach-SW: Polymers
• K10plus-PPN: 1820051706

Abstract

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.