Fig. 7

Source-current dependent bifurcation. (a, b) Input currents I₀ in the range 27 mA–30 mA destabilize steady states resulting in astable behavior and thereby, persistent oscillations. Steady states are stable on either side of this parametric range. Voltage oscillations in the astable region highlighted in (b). (c,d) Within the astable region, oscillation frequency increases as I₀ increases. Frequency of oscillations as a function of I₀ shown in (c) and time domain response for different values of I₀ shown in (d). (e) Cartoons depicting second order neuronal properties, namely periodic action potential generation and spike number adaptation. Experimental results shown in (a–d) highlight the meminductor’s ability to mimic such neuronal activity when appropriately coupled, thereby showing evidence of its potential in neuromorphic hardware development.