Fig. 4.

Microstructural analysis on high electromechanical stability under large stretch. a Optical images of the microstructure evolution of AATN hydrogel when stretched continuously with a strain of 0%, 300, 500, and 700%. With releasing the force, the structures can be recovered. Scale bars, 100 μm. b Schematics of the microstructure of AATN hydrogel. c Schematics of the elongated network of AATN hydrogel when loaded on a tensile stress and recovered structure since released. d Detailed schematics of the deformation and reformation of the dynamic coordination interaction between AgNWs and polymer chains in hydrogel during stretching and releasing process