TiO ₂ Nanowire Array Memristive Devices Emulating Functionalities of Biological Synapses

Memristors are deemed to be the electrical twin biological synapses. They enable emulation of human memory functionalities such as learning, memorizing, and forgetting. The present hydrothermally grown titanium dioxide nanowire array memristive devices have shown able mimic synaptic behaviors. As well spike-rate dependent plasticity, excitatory postsynaptic currents, paired pulse facilitation, high endurance, on/off ratios for arrays presented. Decay fitting currents with Kohlrausch's equation shows lifetimes few milliseconds up several hundred seconds, offering possibility a short-term long-term transition. Furthermore, strong dependence lifetime signals on frequency amplitude stimulation pulses is observed.