Figure 3.

2D simulations of electric field current density vectors (A,D,G), field lines (B,E,H) and the contour plots of electric potential (C,F,I). The plots in (A–C) are the simulation results without the PVDF fiber mat. The plots in (D–F) are simulation results with the as-spun unpolarized PVDF fiber mat present. Plots in (G–I) are the results with the polarized PVDF mats present. The calculations were extended for 30 min with the polarization conditions mentioned earlier. The plus and minus symbols indicate the aluminum electrodes, and the solid white line at the center indicates the PVDF fiber mat orientation.