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Figure 2. (A) Integration of triboelectric and piezoresistive components enables dynamic and static pressure sensing for cognitive processing. Reproduced with permission^[22]. Copyright 2024, American Chemical Society; (B) Wearable hybrid nanogenerators; (C) Principles of robotic systems and application concepts; (D) Machine in a bent state. Reproduced with permission^[34]. Copyright 2023, Elsevier; (E) Schematic diagram of the human tactile nervous system and the bionic droplet e-skin system. Reproduced with permission^[35]. Copyright 2024, Springer Nature.