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One-step volumetric additive manufacturing of complex polymer structures

Author(s)
Browar, Allison E. M.; Kelly, Brett E.; Henriksson, Johannes; Weisgraber, Todd H.; Shusteff, Maxim; Panas, Robert M; Fang, Xuanlai; Spadaccini, Christopher M.; ... Show more Show less
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Creative Commons Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/
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Abstract
Two limitations of additive manufacturing methods that arise from layer-based fabrication are slow speed and geometric constraints (which include poor surface quality). Both limitations are overcome in the work reported here, introducing a new volumetric additive fabrication paradigm that produces photopolymer structures with complex nonperiodic three-dimensional geometries on a time scale of seconds. We implement this approach using holographic patterning of light fields, demonstrate the fabrication of a variety of structures, and study the properties of the light patterns and photosensitive resins required for this fabrication approach. The results indicate that low-absorbing resins containing ~0.1% photoinitiator, illuminated at modest powers (~10 to 100 mW), may be successfully used to build full structures in ~1 to 10 s.
Date issued
2017-12
URI
http://hdl.handle.net/1721.1/118418
Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics; Massachusetts Institute of Technology. Department of Biological Engineering; Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Department of Mechanical Engineering; Massachusetts Institute of Technology. Department of Physics
Journal
Science Advances
Publisher
American Association for the Advancement of Science (AAAS)
Citation
Shusteff, Maxim, Allison E. M. Browar, Brett E. Kelly, Johannes Henriksson, Todd H. Weisgraber, Robert M. Panas, Nicholas X. Fang, and Christopher M. Spadaccini. “One-Step Volumetric Additive Manufacturing of Complex Polymer Structures.” Science Advances 3, no. 12 (December 2017): eaao5496.
Version: Final published version
ISSN
2375-2548

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