Fig. 4: FEM simulations on Al2O3 capacitors with different d/t ratios. | Nature Communications

Fig. 4: FEM simulations on Al2O3 capacitors with different d/t ratios.

From: Overrated energy storage performances of dielectrics seriously affected by fringing effect and parasitic capacitance

Fig. 4

a Electric field distribution on the surface of Al2O3 sample. b Electric field distribution on cross-section of Al2O3 with different d/t ratios in air. Dashed lines represent the edge position of the electrode. c Electric field distributions along the L1 and L2 in x-direction across the surface and center of the cross-section of Al2O3 in air, respectively. Light red, gray, and blue areas refer to the sample under electrode coverage, the sample outside electrode converge and surroundings, respectively. d Comparison between the εr,FEM/εr,0 (line) and εr,exp/εr,0 (dots) ratios of Al2O3 capacitors with various d/t ratios. Error bars represent the standard deviations.

Back to article page