Fig. 3
Impedance spectrum (a) and Rrel between different electrode pairs. In a, the applied pulse is with group 4 parameters (pulse amplitude: 750 V, pulse number: 30) in Table 1. In b, 500 V-30 means the magnitude of the electric field is 500 V and the pulse number is 30 (group 1 in Table 1). (**p < 0.01, *p < 0.05)