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19 April 2023 Controlling light dose in tomographic volumetric additive manufacturing
Antony Orth, Daniel Webber, Yujie Zhang, Rene Lam, Jonathan Boisvert, Chantal Paquet
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Proceedings Volume PC12435, Emerging Digital Micromirror Device Based Systems and Applications XV; PC1243505 (2023) https://doi.org/10.1117/12.2646510
Event: SPIE OPTO, 2023, San Francisco, California, United States
Abstract
In this talk, we will present our observations of printing kinetics in light-based tomographic additive manufacturing using optical scattering tomography. In particular we report a feature-size dependence on polymerization time that contributes significantly to errors in the printed object: small features tend to polymerize more slowly than large features. Therefore, prints are either missing small features or large features are overexposed. We investigate the cause of this feature size polymerization time dependence and present techniques to correct for these errors.
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Antony Orth, Daniel Webber, Yujie Zhang, Rene Lam, Jonathan Boisvert, and Chantal Paquet "Controlling light dose in tomographic volumetric additive manufacturing", Proc. SPIE PC12435, Emerging Digital Micromirror Device Based Systems and Applications XV, PC1243505 (19 April 2023); https://doi.org/10.1117/12.2646510
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KEYWORDS
Tomography
Additive manufacturing
Polymerization
Printing
Polymers
3D printing
Light scattering
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