Fig. 3: Dynamic characteristics of vdW photoelectroactive synapse.
From: Photoelectroactive artificial synapse and its application to biosignal pattern recognition

a Conductance (G) response decaying characteristic (upper panel) and retained conductance difference (ΔG) immediately after application of the co-stimuli and after 400 s (lower panel). b Dynamic range of conductance (Gmax/Gmin) with respect to light power. c Extracted dynamic range with respect to the variation of light pulse width and voltage amplitude. d Long-term potentiation/depression (LTP/D) characteristics of the photoelectroactive synaptic device. e Dynamic range (upper) and asymmetricity (lower) vs. the number of pulses for the LTP/D curves. f Conductance difference between n-th and (n + 1)-th states (ΔG) vs. pulse number (upper) and standard deviation (SD) of ΔG vs. pulse number (lower).