Fig. 9.

(a) Schematic diagram briefly described the fabrication of the conductive r(GO/GelMA) hydrogel conduit with an annulus mold. (b) An image showed side views of GelMA, GO/GelMA, and r(GO/GelMA) conduits with an inner diameter of 1.2 mm and wall thickness of 0.5 mm (scale bar: 10 mm). SEM images showed cross sections of the produced (c, c₁) GelMA, (d, d₁) GO/GelMA (e, e₁) r(GO/GelMA) conduits. (a-e₁) Reproduced with permission [170]. Copyright 2021, John Wiley and Sons. (f) Schematic diagram explaining the way to fabricate the conductive AP/RGONGC. (f₁-f₃) SEM images of the conductive AP/RGO NGC from different dimensions. (g) In vivo implantation and microscopic assessment image abstract of NGCs. (f–g) Reproduced with permission [171]. Copyright 2021, Elsevier. (h–j) Schematic illustration of 3D tube with axially oriented PLCL microfibers under GO and r-GO coating; macroscopic view of the tubular from lateral and transverse aspects. (k–m) PC12 cell neurite outgrowths on rGO-encapsulated 3D tubular under confocal microscopy. (h–m) Reproduced with permission [176]. Copyright 2021, John Wiley and Sons.