fig1
![Enhanced electromechanical conversion via in situ grown CsPbBr<sub>3 </sub>nanoparticle/poly(vinylidene fluoride) fiber composites for physiological signal monitoring](https://image.oaes.cc/39538621-f99e-4ef3-9424-58e37eaa247a/4569.fig.1.jpg)
Figure 1. (A-D) TEM images of a single CPB/PVDF nanocomposite fiber with increasing CPB weight fraction: (A) 3 wt.%; (B) 4 wt.%; (C) 5 wt.%; (D) 6 wt.%. The dash circles indicate the CPB nanorods. (E) Schematic illustration on the in situ growth mechanism of CPB from nanoparticles to 1D nanorods. CPB: CsPbBr3; PVDF: poly(vinylidene fluoride).