Fig. 3. Granular hydrogels are cured through different inter-particle interactions. (a) Micrograph of an injected, and covalently cured granular hydrogel.9 (b) Micrograph of an extruded filament of jammed microgels cured into a granular hydrogel using a binder.43 (c) Image and micrograph of a granular hydrogel cured using coordination chemistry.13 (d) Images of a granular hydrogel cured by charged interactions.52 (e) Micrographs and image of a double network granular hydrogel.14 Scale bars are (a) 100 μm, (b) 500 μm, (c) 100 μm, (d) 2 mm and 10 mm, (e) 500 μm, 1 mm and 5 mm. Adapted with permission.
