Wang Zheng, Zhang Jinhao, Zhang Zhenyu, Meng Jialin, Lei Cheng, Wang Tianyu
School of Integrated Circuits, Shandong University, Jinan 250100, China.
Suzhou Research Institute, Shandong University, Suzhou 215123, China.
Nano Lett. 2025 May 14;25(19):8049-8057. doi: 10.1021/acs.nanolett.5c01843. Epub 2025 May 6.
Near-sensor neuromorphic computing systems that utilize photodetectors and memristors exhibit significant promise in the domains of visual information processing, transmission, and noise reduction recognition. In comparison to conventional photodetectors operating within the visible-light spectrum, thermopile infrared detectors offer distinct advantages in terms of concealment and security. This study proposes an integrated near-sensor computing system that combines a thermoelectric infrared detector with a memristor, which demonstrates a broad detection range (100-310 °C), rapid response time for sensing infrared signals, and excellent neuromorphic computing characteristics for information processing. Besides high-accuracy recognition of handwritten digits, near-infrared visual information recognition and voice recognition for double information encryption were demonstrated in the system. This neuromorphic computing system holds considerable potential for applications in the propagation, encryption, and recognition of security information within the infrared spectrum.
