Rapid, continuous additive manufacturing by volumetric polymerization inhibition patterning

Martin P. De Beer, Harry L. Van Der Laan, Megan A. Cole, Riley J. Whelan, Mark A. Burns, Timothy F. Scott

Research output: Contribution to journalArticleResearchpeer-review

80 Citations (Scopus)

Abstract

Contemporary, layer-wise additive manufacturing approaches afford sluggish object fabrication rates and often yield parts with ridged surfaces; in contrast, continuous stereolithographic printing overcomes the layer-wise operation of conventional devices, greatly increasing achievable print speeds and generating objects with smooth surfaces. We demonstrate a novel method for rapid and continuous stereolithographic additive manufacturing by using two-color irradiation of (meth)acrylate resin formulations containing complementary photoinitiator and photoinhibitor species. In this approach, photopatterned polymerization inhibition volumes generated by irradiation at one wavelength spatially confine the region photopolymerized by a second concurrent irradiation wavelength. Moreover, the inhibition volumes created using this method enable localized control of the polymerized region thickness to effect singleexposure, topographical patterning.

Original languageEnglish
Article numbereaau8723
Number of pages8
JournalScience Advances
Volume5
Issue number1
DOIs
Publication statusPublished - 11 Jan 2019
Externally publishedYes

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