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2 November 2022 Light-modulated synaptic plasticity of SrTiO3:Ru/CuAlO2 bilayer based memristors for artificial visual system
Chunmei Li, Yanan Li, Haolin Luo, Yangming Leng, Jinyong Wang, Wei Li
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Proceedings Volume 12351, International Conference on Advanced Sensing and Smart Manufacturing (ASSM 2022); 123510W (2022) https://doi.org/10.1117/12.2652380
Event: International Conference on Advanced Sensing and Smart Manufacturing (ASSM 2022), 2022, Nanjing, China
Abstract
With the rapid development of intelligent era, machine vision based on von Neumann architecture will face a bottleneck, while the developing neuromorphic computing is one of the most promising options to solve the bottleneck. The key step is to enable the artificial devices to simulate the behaviors of biological synapses, and light-modulated memristors can be applied in neuromorphic computing to build artificial visual systems. Here, a bilayer memristive film of SrTiO3 /CuAlO2 was chosen to construct a two-terminal artificial synaptic sample with construction of ITO/SrTiO3:Ru/CuAlO2/ITO, in which the SrTiO3 layer was doped by Ruthenium (Ru) in order to enhance the light response from ultraviolet to visible range. It is found that the number of interior carries in the memristor could be generated by exterior stimulation of light, and the fabricated memristor could successfully mimic multiple synaptic functions of the biological synapse like excitatory postsynaptic current, short/long-term plasticity transform, paired-pulse facilitation and so on. The obtained excellent synaptic plasticities and optoelectronic properties of our light-modulated memristor have shown a potential in the machine vision and artificial neuromorphic computing systems in the near future.
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Chunmei Li, Yanan Li, Haolin Luo, Yangming Leng, Jinyong Wang, and Wei Li "Light-modulated synaptic plasticity of SrTiO3:Ru/CuAlO2 bilayer based memristors for artificial visual system", Proc. SPIE 12351, International Conference on Advanced Sensing and Smart Manufacturing (ASSM 2022), 123510W (2 November 2022); https://doi.org/10.1117/12.2652380
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KEYWORDS
Synaptic plasticity
Visual system
Ruthenium
Information visualization
Visualization
Visible radiation
Signal processing
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