One-step volumetric additive manufacturing of complex polymer structures
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 p...
| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Published: |
American Association for the Advancement of Science (AAAS)
2018
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| Online Access: | http://hdl.handle.net/1721.1/118418 https://orcid.org/0000-0001-7000-1963 https://orcid.org/0000-0002-7562-0146 https://orcid.org/0000-0001-5713-629X |
| Summary: | 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. |
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