One-step volumetric additive manufacturing of complex polymer structures
Open Access
- 1 December 2017
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science Advances
- Vol. 3 (12), eaao5496
- https://doi.org/10.1126/sciadv.aao5496
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.Keywords
Funding Information
- Office of Naval Research (award356022, N00014-13-1-0631)
- U.S. Department of Energy (award358994, Contract DE-AC52-07NA27344)
- Lawrence Livermore National Laboratory, Office of Science (award342836, 17-ERD-116)
- Lawrence Livermore National Laboratory, Office of Science (award342837, 14-SI-004)
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