A Multifunctional and Efficient Artificial Visual Perception Nervous System with Sb₂Se₃/CdS‐Core/Shell (SC) Nanorod Arrays Optoelectronic Memristor

TLDR

More than 80 % of biological learning occurs through the visual system, motivating artificial vision research that aims to emulate human visual functions such as discrimination, memory, and muscle actuation, while optoelectronic memristors provide efficient light absorption and charge extraction for bionanotechnology applications. The study develops a high‑speed multifunctional artificial vision system that can recognize, memorize, and trigger self‑protection by integrating a Sb₂Se₃/CdS core/shell nanorod array optoelectronic memristor, a threshold‑switching memristor, and an electrochemical actuator. The system operates by activating the optoelectronic memristor to trigger the electrochemical actuator, thereby simulating eye‑muscle contraction and reproducing a self‑protection response to intense light. The device demonstrates a 40‑µs response time and a 0.8‑µA peak current.

Abstract

Abstract More than 80% of biological learning information is received through the visual system; therefore, artificial vision systems have garnered continual interest in the field of artificial intelligence technologies. Simulating the activities of a range of human vision systems, such as discrimination, memory, and induced muscular activity, which still remains a challenge. The authors develop a high‐speed multifunctional artificial vision system capable of recognizing, memorizing, and actuating self‐protection by combining a Sb 2 Se 3 /CdS‐core/shell (SC) nanorod array optoelectronic memristor, a threshold‐switching memristor, and an electrochemical actuator. When an optoelectronic memristor is activated, it can cause an electrochemical actuator to move, simulating the eye muscle contraction and reproducing the self‐protection response of closing eyes when the human eyes are injured by intense light. Light absorption and charge carrier extraction are advantages of optoelectronic memristors with high‐quality SC nanorod arrays. The device achieves a fast response speed and a large response current of up to 40 µs and 0.8 µA. Artificial vision systems offer a potential technique for bionanotechnology, particularly in the domain of artificial intelligence simulation of biosensor systems.