Nyquist plot ofZ* (a), Nyquist plot ofM* (b), and Bode plot ofZ″ andM″ (c), for the equivalent circuit in Fig. 11(R₁=R₂= 1 × 10⁶ Ω,C₁= 1 × 10^–12 F,C₂= 1 × 10^–9 F).