fig9
![Biocompatible composite thin-film wearable piezoelectric pressure sensor for monitoring of physiological and muscle motions](https://image.oaes.cc/81958e4d-4f03-4fe9-8eec-8e042f340929/4974.fig.9.jpg)
Figure 9. The piezoelectric performance of pressure sensing. (A) Illustration of practices and photographs of PBA sensor located in the insole of a shoe. The voltage output of pressure arising from (B) squatting; (C) lunging; and (D) walking. PBA: PVDF+BTO-NP/AlN.