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. 2019 Oct 24;6(24):1901437. doi: 10.1002/advs.201901437

Figure 4.

Figure 4

Energy harvesting from various body motions. a) Images of the elbow bending at around 40°, 80°, and 120°. Current of the b) D‐T‐TENG and c) T‐TENG as the elbow bending at different angles. d,e) Current of the d) D‐T‐TENG and e) T‐TENG when the elbow bends at 120° with ascending speeds. f) Exploded view of the functional sleeve embedded with T‐TENG on the outside and a textile‐based switch on the inside. g) Circuit diagram and working mechanism of the left‐elbow (red) and the right‐elbow (blue) D‐T‐TENG. h) Voltages waveform as the two elbows bend alternatively. i) Images of a TENG textile attached to the trousers on the knee location. j) Current of the D‐T‐TENG on knee as the user is walking, running, and doing high‐knee running. k) Images showing the locations of the TENG textile and the textile‐based switch (up), and the structure variation as the switch is pressed by heel (bottom). l) Working mechanism of the D‐T‐TENG on foot while walking. m) Current of the D‐T‐TENG while walking.