Journal
NANO LETTERS
Volume 20, Issue 11, Pages 8015-8023Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.0c02892
Keywords
artificial visual system; oscillation neuron; neuromorphic system; volatile memristor; image segmentation
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Funding
- National Key Research Plan of China [2018YFB0407500]
- National Science Fund for Distinguished Young Scholars [61725404]
- National Natural Science Foundation of China [61725404, 61874134, 61574166, 61574107, 51503167]
- Strategic Priority Research Program of Chinese Academy of Sciences [XDB30000000, XDB12030400]
- National Key R&D Program of China [2018YFA0208503, 2017YFB0701703]
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Drawing inspiration from biology, neuromorphic systems are of great interest in direct interaction and efficient processing of analogue signals in the real world and could be promising for the development of smart sensors. Here, we demonstrate an artificial sensory neuron consisting of an InGaZnO4 (IGZO(4))-based optical sensor and NbOx-based oscillation neuron in series, which can simultaneously sense the optical information even beyond the visible light region and encode them into electrical impulses. Such artificial vision sensory neurons can convey visual information in a parallel manner analogous to biological vision systems, and the output spikes can be effectively processed by a pulse coupled neural network, demonstrating the capability of image segmentation out of a complex background. This study could facilitate the construction of artificial visual systems and pave the way for the development of light-driven neurorobotics, bioinspired optoelectronics, and neuromorphic computing.
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