Flexible multiresponse-actuated nacre-like MXene nanocomposite for wearable human-machine interfacing

Flexible wearable electronics have received tremendous attention for their potential in electronic skins, wearable healthcare monitoring, and human-machine interfacing. However, it remains a critical challenge to simultaneously achieve wearable epidermic sensing with broad sensing range, fast response/recovery time, and perfect conformability onto skin to realize human healthcare and tiny electrophysiological signals. Meanwhile, traditional epidermic sensors cannot accommodate multistimuli-responsive actuation, which greatly restricts their potential in artificial muscles, intelligent soft robots, and smart switches. Herein, inspired by nacre with unique “brick-and-mortar” structure and excellent mechanical performance, the nacre-like intercalated MXene nanocomposite film is prepared by facile water-evaporation-induced self-assembly, which could be assembled as flexible multifunctional electronics for wearable epidermic sensing and multiresponsive actuation. This work provides a facile strategy for fabricating bioinspired nacre-like intercalated two-dimensional-material-contained nanocomposites with excellent sensing performance and outstanding actuating capability simultaneously for versatile applications in healthcare monitoring, intelligent soft robots, smart switches, and human-machine interfacing.