Fig. 1
From: Smart photonic crystal hydrogels for visual glucose monitoring in diabetic wound healing
Schematic illustration of the synthesis and glucose response mechanism of photonic crystal hydrogels (PCHs). (a) Illustration of synthesis of AA-AM-AFPBA hydrogel. (b) Glucose response mechanism of AA-AM-AFPBA hydrogels. (c) Preparation process of single network PCHs consisted of AA-AM-AFPBA hydrogels. (d) Preparation process of double network PCHs consisted of AA-AM and AA-AM-AFPBA hydrogels