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Optogenetics-Inspired Tunable Synaptic Functions in Memristors.
ACS Nano. 2018 02 27; 12(2):1242-1249.AN

Abstract

Two-terminal memristors with internal Ca2+-like dynamics can be used to faithfully emulate biological synaptic functions and have been intensively studied for neural network implementations. Inspired by the optogenetic technique that utilizes light to tune the Ca2+ dynamics and subsequently the synaptic plasticity, we develop a CH3NH3PbI3 (MAPbI3)-based memristor that exhibits light-tunable synaptic behaviors. Specifically, we show that by increasing the formation energy of iodine vacancy (VI·/VI×), light illumination can be used to control the VI·/VI× generation and annihilation dynamics, resembling light-controlled Ca2+ influx in biological synapses. We demonstrate that the memory formation and memory loss behaviors in the memristors can be modified by controlling the intensity and the wavelength of the illuminated light. Coincidence detection of electrical and light stimulations is also implemented in the memristive device with real-time (≤20 ms) response to light illumination. These results open options to modify the synaptic plasticity effects in memristor-based neuromorphic systems and can lead to the development of electronic systems that can faithfully emulate diverse biological processes.

Authors+Show Affiliations

Department of Electrical Engineering and Computer Science, The University of Michigan , Ann Arbor, Michigan 48109, United States.Department of Electrical Engineering and Computer Science, The University of Michigan , Ann Arbor, Michigan 48109, United States.

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

29357245

Citation

Zhu, Xiaojian, and Wei D. Lu. "Optogenetics-Inspired Tunable Synaptic Functions in Memristors." ACS Nano, vol. 12, no. 2, 2018, pp. 1242-1249.
Zhu X, Lu WD. Optogenetics-Inspired Tunable Synaptic Functions in Memristors. ACS Nano. 2018;12(2):1242-1249.
Zhu, X., & Lu, W. D. (2018). Optogenetics-Inspired Tunable Synaptic Functions in Memristors. ACS Nano, 12(2), 1242-1249. https://doi.org/10.1021/acsnano.7b07317
Zhu X, Lu WD. Optogenetics-Inspired Tunable Synaptic Functions in Memristors. ACS Nano. 2018 02 27;12(2):1242-1249. PubMed PMID: 29357245.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Optogenetics-Inspired Tunable Synaptic Functions in Memristors. AU - Zhu,Xiaojian, AU - Lu,Wei D, Y1 - 2018/01/26/ PY - 2018/1/23/pubmed PY - 2018/1/23/medline PY - 2018/1/23/entrez KW - illumination KW - memristor KW - neuromorphic computing KW - optogenetics KW - organic−inorganic halide perovskite KW - synapse SP - 1242 EP - 1249 JF - ACS nano JO - ACS Nano VL - 12 IS - 2 N2 - Two-terminal memristors with internal Ca2+-like dynamics can be used to faithfully emulate biological synaptic functions and have been intensively studied for neural network implementations. Inspired by the optogenetic technique that utilizes light to tune the Ca2+ dynamics and subsequently the synaptic plasticity, we develop a CH3NH3PbI3 (MAPbI3)-based memristor that exhibits light-tunable synaptic behaviors. Specifically, we show that by increasing the formation energy of iodine vacancy (VI·/VI×), light illumination can be used to control the VI·/VI× generation and annihilation dynamics, resembling light-controlled Ca2+ influx in biological synapses. We demonstrate that the memory formation and memory loss behaviors in the memristors can be modified by controlling the intensity and the wavelength of the illuminated light. Coincidence detection of electrical and light stimulations is also implemented in the memristive device with real-time (≤20 ms) response to light illumination. These results open options to modify the synaptic plasticity effects in memristor-based neuromorphic systems and can lead to the development of electronic systems that can faithfully emulate diverse biological processes. SN - 1936-086X UR - https://www.unboundmedicine.com/medline/citation/29357245/Optogenetics_Inspired_Tunable_Synaptic_Functions_in_Memristors_ L2 - https://dx.doi.org/10.1021/acsnano.7b07317 DB - PRIME DP - Unbound Medicine ER -
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