Wearable Carbon-Based Resistive Sensors for Strain Detection: A Review

Flexible strain sensors have aroused widespread concern due to their potential applications in detecting human motion and health. Carbon-based materials are surpassing candidate materials for flexible strain sensors with superior performances, because of their outstanding electrical conductivity, lightweight and flexibility, and excellent stability. In order to satisfy the detecting requirements for different strain forms in practical applications, various types of strain sensors based on carbon materials have been designed and prepared, including tensile, pressure, bending, torsion, and multiplex strain sensors. Herein, the latest advances in the preparation of flexible carbon-based strain sensors are reviewed according to the strain types. Furthermore, the potential applications and existing challenges of sensors in the field of human motion and physiological information detection are summarized. This review aims to provide some references for further exploitation of high-performance flexible carbon-based strain sensors.