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. Author manuscript; available in PMC: 2020 Jun 1.
Published in final edited form as: Small. 2019 Apr 29;15(23):e1805510. doi: 10.1002/smll.201805510

Figure 4.

Figure 4

Bioprinting of tissue constructs using bioinks with high conductivity and favorable bioelectronics properties. (A) Schematic showing the preparation of PLG-graphene conductive bioink and fabrication of tissue constructs by 3D printing. (B) (Left) Schematic of the extrusion of a bioink containing 60% grapheme and 40% PLG displaying how shear forces at the nozzle tip could result in graphene flake alignment. (Right) SEM images of the printed partially aligned grapheme flakes. Reproduced with permission from ref.[105]. (C) Schematic diagram of the bioprinting process for 3D electrically conductive constructs using DNA/HA-coated CNT bionks. (D) Cast GelMA constructs containing 3D-bioprinted CNT microfibers. (E) Immunostaining for sarcomeric α-actinin (green), nuclei (blue), and Cx43 (red) of cardiomyocytes encapsulated in the GelMA hydrogels containing bioprinted CNT microfibers 10 days post-bioprinting. Reproduced with permission from ref.[113]. (F) A 3D-printed wearable sensor for finger gesture recognition. Reproduced with permission from ref.[116].