Fig. 4From: Multi-functional conductive hydrogels based on heparin–polydopamine complex reduced graphene oxide for epidermal sensing and chronic wound healingMonitoring human movement using the Hep20-PDA0.8-rGO-PAM hydrogel. Detection of finger bending angle variation (A-I), repeated finger bending at various angles (A-II), repeated arm flexion (B), repeated knee bending (C), walking and running activities (D), and repeated swallowing (E).Back to article page