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Download fileMemristors with diffusive dynamics as synaptic emulators for neuromorphic computing
journal contribution
posted on 2017-01-25, 09:44 authored by Zhongrui Wang, Saumil Joshi, Sergey SavelievSergey Saveliev, Hao Jiang, Rivu Midya, Peng Lin, Miao Hu, Ning Ge, John Paul Strachan, Zhiyong Li, Qing Wu, Mark Barnell, Geng-Lin Li, Huolin L. Xin, R.S. Williams, Qiangfei Xia, J. Joshua YangThe accumulation and extrusion of Ca2+ in the pre- and postsynaptic compartments
play a critical role in initiating plastic changes in biological synapses. To emulate this fundamental process in electronic devices, we developed diffusive Ag-in-oxide
memristors with a temporal response during and after stimulation similar to that of the
synaptic Ca2+ dynamics. In situ high-resolution transmission electron microscopy and nanoparticle dynamics simulations both demonstrate that Ag atoms disperse under electrical bias and regroup spontaneously under zero bias because of interfacial energy minimization, closely resembling synaptic influx and extrusion of Ca2+, respectively. The diffusive memristor and its dynamics enable a direct emulation of both short- and long-term plasticity of biological synapses and represent a major advancement in hardware implementation of neuromorphic functionalities.
Funding
This work was supported in part by the U.S. Air Force Research Laboratory (AFRL) (Grant No. FA8750-15-2-0044), the Intelligence Advanced Research Projects Activity (IARPA) (contract 2014-14080800008), U.S. Air Force Office for Scientific Research (AFOSR) (Grant No. FA9550-12-1-0038), and the National Science Foundation (NSF) (ECCS-1253073).
History
School
- Science
Department
- Physics
Published in
Nature MaterialsVolume
16Pages
101 - 108Citation
WANG, Z. ...et al., 2017. Memristors with diffusive dynamics as synaptic emulators for neuromorphic computing. Nature Materials, 16, pp. 101–108.Publisher
© Nature Publishing GroupVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Acceptance date
2016-08-17Publication date
2016-09-26Notes
This paper was accepted for publication in the journal Nature Materials and the definitive published version is available at http://dx.doi.org/10.1038/nmat4756.ISSN
1476-1122eISSN
1476-4660Publisher version
Language
- en