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Figure 1. Design, sensing mechanism, and application overview of the skin-inspired flexible pressure sensor. (A) Schematic illustration of the sensory mechanism of human skin; (B) Structural schematic of the layered architecture of the proposed sensor; (C) Cross-sectional schematic of Ecoflex doped with SiO₂, scanning electron microscopy (SEM) image of the SiO₂-decorated graphene surface, and comparative resistance-pressure response curves of SiO₂-doped and undoped materials; (D) Illustration of the sensor’s conductive mechanism, deformation response under different loading rates, and corresponding resistance variation waveform during high-speed loading; (E) Application schematics showing the sensor’s capability in multi-directional force recognition, surface roughness detection, and gait monitoring; (F) Photographs of the fabricated sensor exhibiting excellent flexibility and mechanical stability under bending and stretching conditions. Figure 1 and Figure 1F are photographs taken by the authors themselves during the experiments. 3D: Three-dimensional.