fig9

Figure 9. (A) The S-POF sensing part embedded in the key position of the insole is combined with the smartphone (a), plot of signal data for three gait cycles (b), and the direction of gait causes differences in plantar pressure distribution (c)^[49]. Copyright 2024, American Chemical Society; (B) PDMS fiber under the relaxing and stretching states (a), schematic design and board design (b and c), and wearable sensor testing on the wrist and elbow (d and e)^[158]. Copyright 2024, Optica Publishing Group; (C) Schematic diagram of the WPOMF sensor (a), potential applications of the WPOMF sensor (b), and one-dimensional convolutional neural network-assisted sensor pronunciation recognition experiment (c and d)^[154]. Copyright 2024, American Chemical Society. S-POF: Solaris polymer optical fiber; PDMS: polydimethylsiloxane; WPOMF: wavy polymer optical microfiber.