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. Author manuscript; available in PMC: 2021 Sep 1.
Published in final edited form as: Mater Horiz. 2020 Jul 16;7(9):2336–2347. doi: 10.1039/d0mh00813c

Fig. 4.

Fig. 4

Printability of PVH for complex constructs of varying compositions. (a) Schematics of embedded bioprinting inside a gelatin supportive matrix. (b) Filament diameters as a function of writing speed and pneumatic pressure. Sample size, N=3. (c) Optical and SEM images of a lattice construct with hierarchical structures. (d) Printed construct of PVHs with varying PEG contents for viscoelastic gradients. White: PEG0; Greenish yellow: FITC-PEG1.2; Red: Rhodamine-PEG2.8. (e) Confocal image and fluorescence-distance profiles at the interface of PVH with viscoelastic gradients. (f) Printed scaffolds of vessel structure, vocal fold, intervertebral disc (IVD), and kidney. The IVD construct contains PVHs of two PEG contents (PEG0 and PEG2.8). (g) Fluorescent images showing printed viscoelastic gradient construct, with confocal images showing the micropores in PEG1.2 and PEG2.8.