Text this: The contour plots of electric fields of (a) single Al<sub>2</sub>O<sub>3</sub> and (b) hybrid Al<sub>2</sub>O<sub>3</sub>/ PVP and total current density of (c) single Al<sub>2</sub>O<sub>3</sub> and (d) hybrid Al<sub>2</sub>O<sub>3</sub> at V
