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. Author manuscript; available in PMC: 2022 Mar 1.
Published in final edited form as: Biofabrication. 2022 Jan 24;14(2):10.1088/1758-5090/ac49d5. doi: 10.1088/1758-5090/ac49d5

Figure 2. Fabrication of vascular constructs using DLP-based 3D printing.

Figure 2.

(a) The formation of PEGDA hydrogel through visible-light irradiation in the presence of Ru/SPS as photoinitiator. (b) The absorption spectrum of the photoabsorber (Ponceau 4R). (c) The designed digital printing pattern of a vascular network with branched structures. (d) Micrographs of printed 2D PEGDA samples containing different concentrations of photoabsorber. (e) Photographs of 3D constructs printed with 40 v/v% PEGDA (Mw = 575 Da), 1-mM/10-mM Ru/SPS, and 1.0 wt.% or 1.5 wt.% photoabsorber. The internal microchannels were perfused with a green dye to improve visibility.