Fig. 4: In-situ SEM images of structural deformation of hierarchical in-situ filling porous structure during compression and schematic description of sensing mechanism. | npj Flexible Electronics

Fig. 4: In-situ SEM images of structural deformation of hierarchical in-situ filling porous structure during compression and schematic description of sensing mechanism.

From: High sensitivity and broad linearity range pressure sensor based on hierarchical in-situ filling porous structure

Fig. 4

Cross-sectional SEM images of lattice structure at a original state, b compression of 26%, c compression of 63% (scale bar: 300 µm). Cross-sectional SEM images of the porous structure at d original state, e compression of 26%, f compression of 63% (scale bar: 100 µm). Cross-sectional SEM images of the CNFs networks embedding in a single pore at g original state, h compression of 26%, i compression of 63% (scale bar: 10 µm; i inset image scale bar: 3 µm). Schematic illustration and circuit diagram of sensing mechanism of HPPS under j small compression, k medium compression, l large compression. m A tiny pressure change under a large preload is used to illustrate the high pressure resolution performance.

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