Fig. 3

A, B Injecting process of the PBNPs@OBG to demonstrate shear-thinning injectability and good writing ability. C − F Photographs of the hydrogel's phenotypic plasticity, including star, Mickey Mouse, little bear, and dolphin. G Twisting shape and H bending shape of the PBNPs@OBG. I, J The process of self-healing. K − M Original, pressing, and recovery shapes of the PBNPs@OBG, indicating peachy flexibility of the hydrogel by bearing deformation under repeated stretching and compression conditions without breaking. N Representative tensile and O compression stress − strain curves of the OBG and PBNPs@OBG. P Tensile and Q compressive strengths of the OBG and PBNPs@OBG (n = 3, ns not significant)