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15 March 2023 Multiphoton polymerization using upconversion nanoparticles for adaptive high-resolution 3D printing
Qianyi Zhang, Antoine Boniface, Virendra Kumar Parashar, Christophe Moser
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Proceedings Volume 12433, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVI; 124330C (2023) https://doi.org/10.1117/12.2650323
Event: SPIE OPTO, 2023, San Francisco, California, United States
Abstract
3D printing technologies have significantly advanced the manufacturing of complex objects for use in various applications. Two-photon polymerization (TPP) has offered the highest resolution (around 100 nm lateral resolution) in 3D printing by introducing a non-linear absorption process. However, the extremely low probability of two-photon absorption requires pulsed lasers with high peak intensity, the cost of which strongly limits the broad dissemination of TPP. Here we propose 3D printing using upconversion nanoparticles (UCNPs) for tunable high-resolution printing of gelatin-based hydrogel while using continuous-wave lasers. Kinetic analysis of the process has been investigated and showed that the nonlinearity of UCNPs can be tuned by the excitation intensity. It offers the possibility of adjusting the voxel size together with the printing speed. This work provides new possibilities for high-resolution additive manufacturing at optimized fabrication speed.
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Qianyi Zhang, Antoine Boniface, Virendra Kumar Parashar, and Christophe Moser "Multiphoton polymerization using upconversion nanoparticles for adaptive high-resolution 3D printing", Proc. SPIE 12433, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XVI, 124330C (15 March 2023); https://doi.org/10.1117/12.2650323
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KEYWORDS
Near infrared
3D printing
Polymerization
Voxels
Nanoparticles
Upconversion
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