fig5

From: CNT array-based aluminum bipolar electrode iontronic memristors

Figure 5. Synaptic emulation behavior of the ACNT/Al system. (A) Schematic illustration of signal transmission in biological synapses; (B) The increased conductance under successive negative pulses (-1.5 V), emulating the PPF property; (C) The decreased conductance under successive positive pulses (+1.5 V), emulating the PPD property; (D) The extracted conductance evolution within the initial 10 s from (B), showing the gradual increase of tendency; (E) The current response curves of ACNT/Al and the current difference between the first two pulses. ACNT/Al: Al and CNT array-based aluminum; Al: aluminum; CNT: carbon nanotube; PPF: paired-pulse facilitation; PPD: paired-pulse depression.