A Flexible LIF Neuron Based on NbOx Memristors for Neural Interface Applications

In this work, we demonstrate a flexible NbO
_x
-based memristor for spiking neuron implementation. The NbO
_x
, device exhibits stable threshold switching behavior and superior bending capability with a curvature radius of 2.5 mm. Based on such a device, we build a Leaky Integrate-and-Fire neuron and achieve four basic neuron features: all-or-nothing, threshold-driven spiking, refractory period, and strength-modulated frequency response. Moreover, the constructed flexible neuron is compatible with wearable sensing systems and can transform sensed analog signals to spike signals, leading them favorably to be used as neural interfaces.