Carbon Nanotube-Coated Thread for Wearable Proprioception Sensing

This paper focuses on the development of thread-based sensor for proprioceptionsensing in finger and knee. The thread sensor is made by dipping cotton thread into carbonnanotube (CNT) dispersion. The electrical and electromechanical properties of the threadchange depending on the dipping parameters. The resistance of the CNT-Coated threadschanges due to in-plane force, exhibiting a piezoresistive-like mechanism. The CNT-coatedthread functioning as strain gage is sewn into hand glove and yoga pants. The thread sensor willstretch upon finger or knee bending, and its resistance will change accordingly. Using thiswearable sensor, proprioception detection is conducted for finger bending and sit-to-standmovement.