Fig. 2: Widely tunable firing frequency of HAN.
From: An ion-electronic hybrid artificial neuron with a widely tunable frequency
a Dependence of the firing frequency and spike peak value on the input voltage. Error bars represent the standard deviation (SD). b Spike waveforms corresponding to input voltages in (a) with matched colors. c Comparison of the frequency range of our HAN with other solid-state ones of different types reported in literature18,19,20,21,23,24,25,27,31,44,45. The light green shaded region highlights the working range of human nervous systems. d Detailed equivalent circuit diagram of the ionic component (left panel), and the step voltage applied across it for time constant evaluation (right panel). e Time evolution of ∆I/Imax under a step voltage of 0.3 V with different baseline voltages. f Firing frequency as a function of electrode working area and input voltage. g Profile corresponding to the blue dashed line in (f), illustrating the typical relationship between the firing frequency and the electrode working area. h Profile corresponding to the yellow dashed line in (f).
