Hybrid Bacteriorhodopsin/Zinc Oxide Synaptic Photoconductors for Bio-compatible Neuromorphic Devices

Wenqing Liu; Hailu Wang; Fangwu LiuYuanyuan LiChaoxian JiaTangxin LiHangyu XuMengyang KangWenrui WeiJinshui MiaoTao ZhangWeida Hu

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Hybrid Bacteriorhodopsin/Zinc Oxide Synaptic Photoconductors for Bio-compatible Neuromorphic Devices

机译：Hybrid Bacteriorhodopsin/Zinc Oxide Synaptic Photoconductors for Bio-compatible Neuromorphic Devices

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摘要

Neuromorphic hardware based on artificial synaptic devices has greatpotential to break the bottleneck of von Neumann architecture, which makesit possible to emulate the working mode of the human brain with low powerconsumption and high operation efficiency. However, current synapticdevices can barely detect photons and are bio-incompatible for future allin-one visual perception technology. Here, synaptic photoconductors basedon an organic–inorganic hybrid structure, and composed of photosensitivebacteriorhodopsin protein layer and zinc oxide film are reported. The synapticphotoconductors demonstrate tunable synaptic plasticity with the modulationof the light illumination time and power intensity. The working mechanismof the photogating effect induced by the proton pump process of bR proteinmolecules is further investigated in detail. Assisting with these properties, theimaging memorization and preprocessing function are successfully emulatedby the synaptic photoconductors. The prototype photosynaptic devices providea unique opportunity to realize artificial synapses, enabling neuromorphichardware.

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来源
《Advanced functional materials》 |2023年第33期|2302135.1-2302135.8|共8页
作者
Wenqing Liu; Hailu Wang; Fangwu LiuYuanyuan LiChaoxian JiaTangxin LiHangyu XuMengyang KangWenrui WeiJinshui MiaoTao ZhangWeida Hu;
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作者单位

State Key Laboratory of Infrared Physics, Shanghai Institute of TechnicalPhysicsChinese Academy of SciencesShanghai 200083, P. R. China;

State Key Laboratory of Infrared Physics, Shanghai Institute of TechnicalPhysicsChinese Academy of SciencesShanghai 200083, P. R. China,University of Chinese Academy of SciencesBeijing 100049, P. R. China;

State Key Laboratory of Infrared Physics, Shanghai Institute of TechnicalPhysicsChinese Academy of SciencesShanghai 200083, P. R. China,University of Chinese Academy of SciencesBeijing 100049, P. R. China,ShanghaiTech UniversityShanghai 201210, P. R. China;

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正文语种英语
中图分类无线电电子学、电信技术;工程材料学;
关键词
bacteriorhodopsin; biomaterials; neuromorphic devices; synaptic photoconductors; zinc oxide;

Hybrid Bacteriorhodopsin/Zinc Oxide Synaptic Photoconductors for Bio-compatible Neuromorphic Devices

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