Synaptic learning behavior of a TiO2 nanowire memristor

TiO₂ nanowire memristors were fabricated by dielectrophoresis. The responding current of the memristor continuously increases and decreases with the consecutive positive and negative sweep voltage, which is similar to the nonlinear transmission characteristics of biological synapses. Spike-rate-dependent plasticity and learning behaviors of TiO₂ memristor were studied by applying programmed pulses. The pulses with higher amplitude, bigger width …