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. 2022 Sep 23;13(10):1586. doi: 10.3390/mi13101586

Figure 4.

Figure 4

(a) The structure and manufacturing process of the CF-TENG and the optical picture of the insole sensing by pressure [43]. Yang et al. (2022), CNKI. (b) Schematic representation of the flexible sliding sensor. The device can be placed on the surface of a finger to collect pressure and glide signals [44]. Yuan et al. (2020), Elsevier. (c) Microstructure of human finger surface. (d) Design of a tactile sensing system based on Fe skin and artificial neural network [46]. Zhao et al. (2021), Elsevier. (e) Schematic diagram of CS-TENG manufacturing process and sensor array [47]. Yu et al. (2020), Elsevier. (f) Structural schematic of flexible TENG [45]. Zhu et al. (2022), Elsevier. (g) Schematic diagram of T-TENG based on a single fiber. (h) Wide application scenarios of T-TENG (I) a finger. (II) a wrist. (III) an elbow and (IV) a foot. [51]. Wu et al. (2022), Elsevier.