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Layerless fabrication with continuous liquid interface production

delete2016-09-26
delete355
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OA
AI
R
Rima Janusziewicz
J
John R. Tumbleston
A
Adam L. Quintanilla
S
Sue J. Mecham
J
Joseph M. DeSimone *
DOI:10.1073/pnas.1605271113delete
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Abstract

Abstract

En 中文
Despite the increasing popularity of 3D printing, also known as additive manufacturing (AM), the technique has not developed beyond the realm of rapid prototyping. This confinement of the field can be attributed to the inherent flaws of layer-by-layer printing and, in particular, anisotropic mechanical properties that depend on print direction, visible by the staircasing surface finish effect. Continuous liquid interface production (CLIP) is an alternative approach to AM that capitalizes on the fundamental principle of oxygen-inhibited photopolymerization to generate a continual liquid interface of uncured resin between the growing part and the exposure window. This interface eliminates the necessity of an iterative layer-by-layer process, allowing for continuous production. Herein we report the advantages of continuous production, specifically the fabrication of layerless parts. These advantages enable the fabrication of large overhangs without the use of supports, reduction of the staircasing effect without compromising fabrication time, and isotropic mechanical properties. Combined, these advantages result in multiple indicators of layerless and monolithic fabrication using CLIP technology.
Keywords:
stereolithogaphy
continuous liquid interface production
3D printing
additive manufacturing
isotropic properties
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Journal

P
Proceedings of the National Academy of Sciences of the United States of America
IF:
9.1
Papers:
10.8W
Citations:
73.5W

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U
university of north carolina
Scholars:
7.4W
Papers: 6.5W
Citations: 93
U
University of North Carolina School of Medicine
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1.6W
Papers: 1.1W
Citations: 20
U
University of North Carolina Chapel Hill
Scholars:
3.9W
Papers: 3.1W
Citations: 46
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