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. 2021 May 11;12:2692. doi: 10.1038/s41467-021-23020-3

Fig. 1. Triboelectric bidirectional (TBD) sensor-integrated exoskeleton system.

Fig. 1

a Schematics of exoskeleton sensory system for realizing the manipulation in virtual space and robotics. b Working principle of TBD sensor. c Key functions for achieving the multidimensional motion sensing of the upper limb, (i) basic bidirectional rotation sensing, (ii) bidirectional rotation sensing with two degree of freedoms (DOFs), (iii) bidirectional detection of twisting motion of the wrist, and (iv) bidirectional linear motion sensing for finger bending. Photo credit: Minglu Zhu, National University of Singapore.