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Flexible artificial synapse with relearning function based on ion gel-graphene FET

2021-10-14

 

Author(s): Feng, Di; Niu, Zihao; Yang, Jiayi; Xu, Wei; Liu, Shuangshuang; Mao, Xu; Li, Xiuhan

Source:NANO ENERGY Volume:90 Article Number:106526 DOI:10.1016/j.nanoen.2021.106526 Published:DEC 2021

Abstract: Due to its high-speed parallel processing, the human brain is superior to the von Neumann system computer in processing images, speech and perception. This paper proposes a flexible artificial synaptic device fabricated on graphene field effect transistors with ion gel. The channel with 100 mu m is fabricated on a flexible substrate, and the weights of nerve synapses are adjusted by ion movement in the ion gel. The artificial synapse successfully mimics synaptic functions under low drain voltage (3 mV), such as excitatory postsynaptic current, inhibition postsynaptic current, paired-pulse facilitation and long-term plasticity with microampere current, and artificial synapse has a function similar to human forgetting and relearning. In order to integrate artificial synapse device with other circuits, the equivalent circuit of the artificial synapse simulates the plasticity of the synapse in this paper. These provide a new basis for the simulation and production of flexible artificial synapse, and the excellent long-term plasticity characteristics have huge application potential in memory functions.

Accession Number:WOS:000703207000002

ISSN: 2211-2855

eISSN: 2211-3282

Full Text: https://www.sciencedirect.com/science/article/pii/S2211285521007783?via%3Dihub

 

 

 

 



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