Fig. 5
From: Perspective on photonic memristive neuromorphic computing
a Schematic of the crosspoint diffusive memristor consisting of a SiOx Ny:Ag layer between two Pt electrodes. The artificial neuron receives software-summed presynaptic inputs via a pulsed voltage source and an equivalent synaptic resistor. Both the artificial and biological neurons integrate input stimuli (here represented in orange) and fire when the threshold condition is reached. b Optical micrograph of the integrated memristive neural network, consisting of an 8 × 8 one-transistor-one-resistor memristive synapse crossbar interfacing with eight diffusive memristor artificial neurons. c Scanning electron micrograph of a single synaptic cell. d Cross-sectional transmission electron microscopy image of the integrated Pd/HfOx/Ta drift memristor prepared by focused-ion-beam cutting. e Scanning electron micrograph of a single diffusive memristor junction. f High-resolution transmission electron micrograph of the cross-section of the Pt/Ag/SiOx:Ag/Ag/Pt diffusive memristor showing amorphous background SiOx with nanocrystalline thin Ag layer. Reproduced from ref. [30] with permission