fig1

Figure 1. (A) Synthesis and design of a triple-network conductive hydrogel fiber; (B) Mechanical flexibility photographs of the gel fiber; (C) Typical stress-strain curves and (D) conductivities of the gel fibers treated with different ion concentrations; (E) SEM images; (F) Design of twisted gel fiber with directional spatial perception and proposed underlying sensing principles; (G) Potential applications in wearable electronics particularly for directional and angle sensing. SEM: Scanning electron microscopy.