Flexible neuromorphic devices exhibit substantial promise for applications in next-generation intelligent human-machine interaction systems. While, the primary hurdle for flexible neuromorphic devices lies in functional impairment arising from mechanical damage. Here, earthworm-inspired self-revival iontronic neuromorphic devices are fabricated with a decentralized architecture by polymer ion gel as an ion transport network. In the integrated device, a discrete hemispheric array structure is engineered to arrest crack propagation by physical isolation. Furthermore, the devices exhibit self-revival capacity after damage due to the rapidly-formed dynamic chemical bonds and transferable properties of independent hemispheric units. Notably, the iontronic neuromorphic devices are applied for the motion-cognition nerve system, achieving a human body movement tracking accuracy rate of 98%. Even when damaged, the system maintains a 96% tracking accuracy rate after self-revival. This work contributes to the design of novel neuromorphic devices and demonstrates significant potential for revolutionizing fields such as prosthetics, rehabilitation, and interactive robotics.
Li et al. (Mon,) studied this question.