Fiber-Based Piezoresistive Wearable Sensor for Knittable Tactile Sensing

In this work, we proposed a fiber-based wearable piezoresistive sensor that had high sensing performance and well flexibility. The sensor can detect a force as low as 1.5 mN, and showed excellent properties of fast response, quick recovery, good repeatability and stability. Here, the potential of using the sensitive fiber materials to achieve flexible and knitted structures for tactile application was explored. Taking advantage of the weaving feature, these fibers can be easily knitted into fabric to form sensor array to achieve multiple sites measurement. For another, knitted fibers are structural flexibility and could be integrated into various configurations, which demonstrates the potential in wearable tactile perception.