Figure 1.

PNP hydrogels exhibit solid‐like rheological properties with robust shear‐thinning and self‐healing capabilities. A) Oscillatory shear rheology of PNP hydrogels indicating a storage modulus (G′) greater than the loss modulus (G″) throughout the tested frequencies. B) Steady shear rheology measurements indicating a decrease of viscosity at increasing shear. C) Ashby style plot demonstrating the injectability of PNP hydrogels with or without cargo under clinically relevant constraints. Based on methodology from Lopez Hernandez et al.^{[ 18 ]} D) Injection of PNP hydrogel through a 21‐gauge needle: (i) pre‐injection, (ii) injection of the hydrogel through the needle demonstrating liquid‐like rheological properties, (iii) when no longer under high shear conditions PNP hydrogels regain solid‐like properties, such as (iv) the resistance of flow due to gravity.