Carbon Nanotube-Coated Thread for Wearable Proprioception Sensing
Abstract
This paper focuses on the development of thread-based sensor for proprioception
sensing in finger and knee. The thread sensor is made by dipping cotton thread into carbon
nanotube (CNT) dispersion. The electrical and electromechanical properties of the thread
change depending on the dipping parameters. The resistance of the CNT-Coated threads
changes due to in-plane force, exhibiting a piezoresistive-like mechanism. The CNT-coated
thread functioning as strain gage is sewn into hand glove and yoga pants. The thread sensor will
stretch upon finger or knee bending, and its resistance will change accordingly. Using this
wearable sensor, proprioception detection is conducted for finger bending and sit-to-stand
movement.