Scalable nanofocusing heterojunctions for raptor-inspired on-chip vision perception
Biological visual systems provide a blueprint for intelligent perception in complex dynamic environments. Inspired by the optical role of retinal oil droplets in raptor vision, we report a plasmonic nanofocusing synaptic array (PNSA) for bioinspired visual sensing and motion perception. The pivotal design is a wafer-scale Au@MoS 2 core-shell heterojunction that enhances light concentration like the retinal oil droplets of raptors. Leveraging strong localized surface plasmon resonance in the Au core and efficient hot-carrier generation in the MoS 2 shell, the PNSA exhibits an ultrafast relaxation time of 2.2 ms, corresponding to a theoretical refresh rate of ∼450 Hz. Uniform 2-inch wafer-scale fabrication enables a 32 × 32 optoelectronic synaptic array with 100% yield and only 2.2% device-to-device variation. The array supports 5-bit optical programming and generates temporally encoded motion representations that achieve 98.95% accuracy in motion-direction classification after 10 training epochs. This work establishes a scalable materials platform for bioinspired visual sensing, offering a promising route toward on-chip vision perception.
Authors
- Yang Chai (ORCID: https://orcid.org/0000-0002-8943-0861)
- Tianyou Zhai (ORCID: https://orcid.org/0000-0003-0985-4806)
- Yan Xu (ORCID: https://orcid.org/0000-0002-3319-4695)
- Decai Ouyang
- Shenghong Liu (ORCID: https://orcid.org/0000-0002-8311-119X)
- Yuan Li (ORCID: https://orcid.org/0000-0001-7452-1149)
- Yajie Wang (ORCID: https://orcid.org/0000-0001-7222-3148)
- Jiazheng Wang (ORCID: https://orcid.org/0000-0003-1182-442X)
- Hongbo He (ORCID: https://orcid.org/0000-0002-7773-8834)
- Wenhua Hu (ORCID: https://orcid.org/0009-0007-1425-2881)
- Wenke He (ORCID: https://orcid.org/0000-0002-9282-8205)
- Gaohang Huo
- Yi-Xiang Wang (ORCID: https://orcid.org/0000-0002-4021-4228)
- Ming Deng
- Lanhao Qin
- Haohui Peng (ORCID: https://orcid.org/0009-0006-1212-3229)
- Lizhou Miao
Institutions
- Hong Kong Polytechnic University (HK)
- Wuhan University of Technology (CN)
- Huazhong University of Science and Technology (CN)
Publication Details
- Journal
- Science Advances
- Published
- 2026-07-23
- DOI
- https://doi.org/10.1126/sciadv.aee7840
- Primary Topic
- Advanced Memory and Neural Computing
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Huazhong University of Science and Technology
- Natural Science Foundation of Hubei Province
- Shenzhen Graduate School, Peking University
- Basic and Applied Basic Research Foundation of Guangdong Province