FIGURE 5.

Scaled differential capacitance ${\overline{C}}_{\mathit{diff}}$ as a function of the scaled surface charge density $s$ based on RMA (upper three diagrams) and QCA (lower three diagrams). The lower three diagrams of Figures 4, 5 are identical. Each diagram shows 11 curves for $\omega =0$ (uppermost curve) to $\omega =1$ (black curve on the bottom), with $\omega$ changing in steps of 0.1. Diagrams refer to $r_0=0$ (left column, colored purple), $r_0=l$ (middle column, colored red), and $r_0=3l$ (right column, colored green). All curves are calculated for $z=6$ . All models are based on solving Equations 16, 17, yet with the relationship $\eta (\mathrm{\Psi })$ emerging from Equation 38 for the upper three diagrams and from Equation 13 for the lower three diagrams.