Fig. 5
From: Studies on the electrostatic effects of stretched PVDF films and nanofibers
Fabrications and properties of PVDF nanofiber meshes. a Schematic diagram of the preparation process of electrostatic spinning. b SEM images of PVDF nanofiber`s under different mass fractions: 6 wt% (i); 8 wt% (ii); 10 wt% (iii); 11 wt% (iv); 12 wt% (v); and13 wt% (vi). c Piezoelectric effect of PVDF nanofiber mesh with different mass fractions. d Pyroelectric effect of PVDF nanofiber mesh with different mass fractions