fig5

Figure 5. Schematic diagram of piezoresistive pressure sensors: (A) Step-by-step process of sensor preparation^[189]; Adapted from Zhang et al., Journal of Alloys and Compounds, 2024 [Elsevier], with permission; (B) Schematic of the piezoresistive phenomenon; (C) Human body motion detection and recognition using electrospun piezoresistive sensors based on MXene/PPNs/MXene/TPUEM^[190]. Reproduced from Cheng et al., Sensors and Actuators A: Physical, 2023 [Elsevier], with permission. PPFP fiber membranes^[191]. Reproduced from Wei et al., Applied Materials, 2024 [American Chemical Society], with permission. PPNs: P(St-MAA)@PPy nanospheres; TPUEM: thermoplastic polyurethane electrospun membrane; PPFP: polyvinylidene fluoride/polyacry lonitrile/polyethylene−polypropylene glycol/polypyrrole; TPU: thermoplastic polyurethane; MWCNTs: multi-walled carbon nanotubes.