Tension-Responsive Graphene Oxide Conductive Hydrogel with Robust Mechanical Properties and High Sensitivity for Human Motion Monitoring

PVA-BB/GO-Fe 3+ /agar hydrogels (BB is configured by 1:1 configuration of 0.04 mol L −1 boric acid solution and 0.04 mol L −1 borax solution) are designed with excellent mechanical and electrical properties due to their triple cross-linked network, and they maintain stable performance in various tests, which is sufficient to support the use of hydrogels in multiple scenarios. Meanwhile, the tension responsiveness of the PVA-BB/GO-Fe 3+ /agar hydrogel allows it to rapidly transmit signal changes upon tension changes. Finally, maintaining increased energy dissipation and strength enhancement during the loading–unloading cycle provides the possibility of long, stable operation. In summary, it is believed that PVA-BB/GO-Fe 3+ /agar hydrogel has significant potential in the field of flexible sensors and is expected to be fabricated as a sensor for motion monitoring.