journal article·2025-12Open access

2D Covalent Organic Framework‐Based Heterostructure for Neuromorphic Visual Processing

Wei Zeng, Minghui Hou, Hang Li, Wen‐Min Zhong, Shizheng Wen, JiYu Zhao, Guanglong Ding, Yan Yan, Meng Zhang, Yi Liu, Su‐Ting Han, Vellaisamy A. L. Roy, Xueqing Yang, Ye Zhou

Advanced Functional Materials· Volume 35· Issue 52

Abstract

Abstract The increasing demands of edge computing and Internet of Things (IoT) applications have highlighted critical limitations in conventional von Neumann‐based vision systems, particularly regarding energy efficiency and processing latency. Drawing inspiration from biological vision, an artificial visual system with a 2D covalent organic framework (COF)/Molybdenum Disulfide (MoS 2 ) van der Waals heterostructure‐based synaptic device is developed. This architecture integrates ultrathin zinc porphyrin‐2,5‐dihydroxyterephthalaldehyde (ZnP‐2,5‐DHa) 2D COF nanosheets, known for their exceptional photoresponsivity and environmental stability, with high‐mobility MoS₂ semiconductor channels. The resulting heterostructure exhibits both broadband optical response and light‐tunable synaptic plasticity, enabling biomimetic visual information acquisition and preprocessing within a single integrated platform. For static image processing, its spectrally selective response enables RGB‐based denoising, improving convolutional neural network (CNN) recognition accuracy from 37.9% to 92.5% in high‐noise environments, as evidenced in motion‐blurred license plate restoration. For dynamic vision tasks, the integration of relaxation dynamics with 16 distinguishable conductance states facilitates precise spatiotemporal motion encoding, allowing artificial neural networks (ANN) to achieve 95.2% directional recognition accuracy. This study provides a material‐level innovation for next‐generation bio‐inspired vision systems, with transformative potential for autonomous vehicles, intelligent surveillance, and neuromorphic edge computing.
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Research context

OpenAlex topics: Advanced Memory and Neural Computing · Covalent Organic Framework Applications · Luminescence and Fluorescent Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute for Advanced Study Shenzhen University Shenzhen 518060 P. R. China

State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and Protection Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions Soochow University Suzhou 215123 P. R. China

Jiangsu Province Key Laboratory of Modern Measurement Technology and Intelligent Systems School of Physics and Electronic Electrical Engineering Huaiyin Normal University Changjiang West Road 111 Huai'an 223300 P. R. China

State Key Laboratory of Fine Chemicals Frontiers Science Center for Smart Materials Dalian University of Technology Dalian 116024 P. R. China

State Key Laboratory of Radio Frequency Heterogeneous Integration Shenzhen University Shenzhen 518060 P. R. China

Department of Materials Loughborough University Loughborough LE11 3TU UK

Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy The Hong Kong Polytechnic University Hung Hom Hong Kong SAR 999077 P. R. China

School of Science and Technology School of Science and Technology Hong Kong Metropolitan University Ho Man Tin Hong Kong SAR 999077 P. R. China

Funding

National Natural Science Foundation of China · Ministry of Education of the People's Republic of China · Basic and Applied Basic Research Foundation of Guangdong Province · Science, Technology and Innovation Commission of Shenzhen Municipality · Royal Society of Chemistry

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