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Title: Memristors with diffusive dynamics as synaptic emulators for neuromorphic computing
Authors: Wang, Zhongrui
Joshi, Saumil
Savel'ev, Sergey
Jiang, Hao
Midya, Rivu
Lin, Peng
Hu, Miao
Ge, Ning
Strachan, John Paul
Li, Zhiyong
Wu, Qing
Barnell, Mark
Li, Geng-Lin
Xin, Huolin L.
Williams, R.S.
Xia, Qiangfei
Yang, J. Joshua
Keywords: Biotechnology
Electronic devices
Nanoscience and technology
Issue Date: 2017
Publisher: © Nature Publishing Group
Citation: WANG, Z. ...et al., 2017. Memristors with diffusive dynamics as synaptic emulators for neuromorphic computing. Nature Materials, 16, pp. 101–108.
Abstract: The 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.
Description: 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.
Sponsor: 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).
Version: Accepted for publication
DOI: 10.1038/nmat4756
URI: https://dspace.lboro.ac.uk/2134/23851
Publisher Link: http://dx.doi.org/10.1038/nmat4756
ISSN: 1476-4660
Appears in Collections:Published Articles (Physics)

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