Highly Stretchable, Breathable, and Self‐Powered Strain‐Temperature Dual‐Functional Sensors with Laminated Structure for Health Monitoring, Hyperthermia, and Physiotherapy Applications

Abstract

AbstractIn recent years, wearable multifunctional sensors have experienced tremendous development due to their wide application prospects in areas such as Internet of Things, human‐machine interactions, and personal health monitoring. These sensors require not only superior capability to distinguish multiple stimuli with effective signal decoupling, but also good wearable comfortability and even self‐powered features. In this work, a highly stretchable, breathable, and self‐powered sensor enabling simultaneous detection of large tensile strain and temperature stimuli has been designed and successfully fabricated. In this sensor, two functional layers for strain sensing and temperature sensing with high mechanical compatibility are independently arranged, thereby facilitating effective signal decoupling upon the strain‐temperature coupled dual‐stimuli. Notably, this strain‐temperature dual‐functional sensor exhibits not only a high stretchability with a wide working range of up to 100%, but also excellent strain sensing capability and temperature sensing capability. Based on a rational electric circuit design, the sensor further enables synchronous strain‐temperature monitoring in a self‐powered mode. Its practical applications for human motion monitoring, hyperthermia, and physiotherapy are demonstrated. Combining the excellent sensing performance and wearability, the sensor developed in this work can hold great promise for future wearable electronics and E‐skin applications.