The frequency dependence of the voltages induced in an alternating field, with σ1i = 0.5 S/m, ɛ1m = 3.0 × 10−11 As/Vm, and d1 = 10 nm, and with default values for the other parameters. The top plot shows |ΔΨorg| (solid) and |ΔΨcell| (dashed) for E = 5 × 104 V/m and θ = 0, and the bottom plot shows |ΔΨorg| / |ΔΨcell|. This ratio exceeds the value of 1 for ω > 7.78 × 106 s−1, attaining the maximum of 3.67 at ω = 1.58 × 108 s−1.