A Flexible Resistive Strain Sensor Based on Mixed Carbon Nanomaterials

Abstract

With the development of flexible electronic technology, flexible strain sensors are playing an increasingly important role in human motion detection and medical health. It is still an important research topic to consider the sensitivity and stability of flexible strain sensors in practical applications. This work describes a new type of flexible resistive strain sensor that uses a new and simple method to embed sensitive materials on the surface of a flexible substrate. The flexible strain sensor has both excellent stability and good flexibility. The sensor has a gauge factor of 5.875 in the strain range of 0-5%, and a gauge factor of 4.252 in the strain range of 10%-120%. The sensor remains stable over 1000 repetitions. The sensor can be used to detect human movements, including large-scale movements of human limbs and small-scale bending of finger joints. Because of its simple manufacturing process and excellent characteristics, it has shown great potential in medical health and smart wearable devices.