Fig. 4: Ag nanocluster distributions in the switching layers.
From: Enhanced analog synaptic behavior of SiNx/a-Si bilayer memristors through Ge implantation

XTEM images of a unimplanted and b implanted devices. The SiNx switching layers with Ag nanoclusters are denoted by dashed rectangles. STEM images of the Ag nanoclusters within the SiNx layer for the c unimplanted and d implanted devices. The brighter particles with strong contrast in the SiNx layer are the Ag nanoclusters.