405739.fig.003a
(a)
405739.fig.003b
(b)
405739.fig.003c
(c)
405739.fig.003d
(d)
Figure 3: Characteristics of memristor. (a) Typical memristor pinched-hysteresis loop; (b) memristor - curve; (c) memristance versus state map; (d) memristance changes with a series of voltages pulses.