Volumetric additive manufacturing via tomographic reconstruction

doi:10.1126/science.aau7114

. 2019 Mar 8;363(6431):1075-1079.

doi: 10.1126/science.aau7114. Epub 2019 Jan 31.

Volumetric additive manufacturing via tomographic reconstruction

Brett E Kelly^{1

2}, Indrasen Bhattacharya³, Hossein Heidari¹, Maxim Shusteff², Christopher M Spadaccini⁴, Hayden K Taylor⁵

Affiliations

¹ Department of Mechanical Engineering, University of California, Berkeley, Berkeley, CA 94720, USA.
² Materials Engineering Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
³ Applied Science and Technology program, University of California, Berkeley, Berkeley, CA 94720, USA.
⁴ Engineering Directorate, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
⁵ Department of Mechanical Engineering, University of California, Berkeley, Berkeley, CA 94720, USA. hkt@berkeley.edu.

PMID: 30705152
DOI: 10.1126/science.aau7114

Volumetric additive manufacturing via tomographic reconstruction

Brett E Kelly et al. Science. 2019.

. 2019 Mar 8;363(6431):1075-1079.

doi: 10.1126/science.aau7114. Epub 2019 Jan 31.

Authors

Brett E Kelly^{1

2}, Indrasen Bhattacharya³, Hossein Heidari¹, Maxim Shusteff², Christopher M Spadaccini⁴, Hayden K Taylor⁵

Affiliations

¹ Department of Mechanical Engineering, University of California, Berkeley, Berkeley, CA 94720, USA.
² Materials Engineering Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
³ Applied Science and Technology program, University of California, Berkeley, Berkeley, CA 94720, USA.
⁴ Engineering Directorate, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
⁵ Department of Mechanical Engineering, University of California, Berkeley, Berkeley, CA 94720, USA. hkt@berkeley.edu.

PMID: 30705152
DOI: 10.1126/science.aau7114

Abstract

Additive manufacturing promises enormous geometrical freedom and the potential to combine materials for complex functions. The speed, geometry, and surface quality limitations of additive processes are linked to their reliance on material layering. We demonstrated concurrent printing of all points within a three-dimensional object by illuminating a rotating volume of photosensitive material with a dynamically evolving light pattern. We printed features as small as 0.3 millimeters in engineering acrylate polymers and printed soft structures with exceptionally smooth surfaces into a gelatin methacrylate hydrogel. Our process enables us to construct components that encase other preexisting solid objects, allowing for multimaterial fabrication. We developed models to describe speed and spatial resolution capabilities and demonstrated printing times of 30 to 120 seconds for diverse centimeter-scale objects.

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Forget everything you know about 3D printing - the 'replicator' is here.
Castelvecchi D. Castelvecchi D. Nature. 2019 Feb;566(7742):17. doi: 10.1038/d41586-018-07798-9. Nature. 2019. PMID: 30723345 No abstract available.
How to print a 3D object all at once.
Hart AJ, Rao A. Hart AJ, et al. Science. 2019 Mar 8;363(6431):1042-1043. doi: 10.1126/science.aaw7062. Science. 2019. PMID: 30846587 No abstract available.

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Volumetric additive manufacturing via tomographic reconstruction

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