Fig. 6. Excellent pore interconnectivity of the biomimetic UHANWs/Col porous nanocomposite with 66.7 wt% UHANWs: (a and b) the rehydrated UHANWs/Col porous nanocomposite is placed in a glass Petri dish with 5 vol% alamarBlue cell viability assay reagent solution; (c) squeezing the UHANWs/Col porous nanocomposite with a finger; (d and e) releasing the UHANWs/Col porous nanocomposite after squeezing. The scale bar represents 1 cm.