“…There are some complications (Deslouis, et al, 1999) that avoid unique interpretation especially for PANi films. They include (a) redox reactions which convert the states between the insulator and the conductor, (b) a function of electrically conducting porous PANi films as an electrode (Ren, et al, 1995), (c) hysteresis responding to such a long applied voltage change (Heinze, et al, 1987;Feldberg, et al, 1988) that it can be expressed quantitatively by logarithmic time-dependence Odin, et al, 1992), (d) undistinguished Faradaic currents from capacitive ones (Heinze, et al, 1988;Feldberg, 1984), which has been extensively discussed (MacDiarmid, et al, 1989), and (e) complicated contribution of ions (Deslouis, et al, 1999;Benyaich, et al, 1996). Item (a) is coupled with (b) to expand or shrink the conducting zone over the film, called the propagation of the conducting zone (Aoki, et al, 1992;.…”