Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/156536
Title: Mimicking neuroplasticity via ion migration in van der Waals layered copper indium thiophosphate
Authors: Chen, Jiangang
Zhu, Chao
Cao, Guiming
Liu, Haishi
Bian, Renji
Wang, Jinyong
Li, Changcun
Chen, Jieqiong
Fu, Qundong
Liu, Qing
Meng, Peng
Li, Wei
Liu, Fucai
Liu, Zheng
Keywords: Engineering::Electrical and electronic engineering::Nanoelectronics
Engineering::Materials::Microelectronics and semiconductor materials
Issue Date: 2021
Source: Chen, J., Zhu, C., Cao, G., Liu, H., Bian, R., Wang, J., Li, C., Chen, J., Fu, Q., Liu, Q., Meng, P., Li, W., Liu, F. & Liu, Z. (2021). Mimicking neuroplasticity via ion migration in van der Waals layered copper indium thiophosphate. Advanced Materials. https://dx.doi.org/10.1002/adma.202104676
Project: NRF-CRP22-2019-0007
NRF-CRP21-2018-0007 
MOE2018-T3-1-002
MOE2016-T2-1-131
RG4/17
RG7/18
Journal: Advanced Materials
Abstract: Artificial synaptic devices are the essential components of neuromorphic computing systems, which are capable of parallel information storage and processing with high area and energy efficiencies, showing high promise in future storage systems and in-memory computing. Analogous to the diffusion of neurotransmitter between neurons, ion-migration-based synaptic devices are becoming promising for mimicking synaptic plasticity, though the precise control of ion migration is still challenging. Due to the unique 2D nature and highly anisotropic ionic transport properties, van der Waals layered materials are attractive for synaptic device applications. Here, utilizing the high conductivity from Cu+ -ion migration, a two-terminal artificial synaptic device based on layered copper indium thiophosphate is studied. By controlling the migration of Cu+ ions with an electric field, the device mimics various neuroplasticity functions, such as short-term plasticity, long-term plasticity, and spike-time-dependent plasticity. The Pavlovian conditioning and activity-dependent synaptic plasticity involved neural functions are also successfully emulated. These results show a promising opportunity to modulate ion migration in 2D materials through field-driven ionic processes, making the demonstrated synaptic device an intriguing candidate for future low-power neuromorphic applications.
URI: https://hdl.handle.net/10356/156536
ISSN: 0935-9648
DOI: 10.1002/adma.202104676
Rights: This is the peer reviewed version of the following article: Chen, J., Zhu, C., Cao, G., Liu, H., Bian, R., Wang, J., Li, C., Chen, J., Fu, Q., Liu, Q., Meng, P., Li, W., Liu, F. & Liu, Z. (2021). Mimicking neuroplasticity via ion migration in van der Waals layered copper indium thiophosphate. Advanced Materials, which has been published in final form at https://doi.org/10.1002/adma.202104676. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: embargo_20221022
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
MSE Journal Articles

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