Fig. 3: Full-functional artificial vision system implanted in PV-RAM array. | Nature Communications

Fig. 3: Full-functional artificial vision system implanted in PV-RAM array.

From: Mesoscopic sliding ferroelectricity enabled photovoltaic random access memory for material-level artificial vision system

Fig. 3

a Optical microscopy images (left and middle) and scanning electron microscopy image of the PV-RAM array. Scale bar, left: 100 μm, middle: 20 μm, right: 5 μm. b Learning curve of accuracy with different levels of noise. c Demonstration of the artificial vision system. The binary weights were presented by the programmed photoresponse. The input images of “Z”, “I”, “O”, “N” were projected onto the array by a 200 mW laser. The output voltages were collected, which indicates the probability. The output can flicker LED patterns through a capacitor. d The off-line reinforcement learning process. e, f Recognition of the learned image (√, e) from other image (×, f).

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