Tunable Synaptic Plasticity in Crystallized Conjugated Polymer Nanowire Artificial Synapses

In biological synapses, short‐term plasticity is important for computation and signal transmission, whereas long‐term plasticity is essential for memory formation. Comparably, designing a strategy that can easily tune the synaptic plasticity of artificial synapses can benefit constructing an artific...

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Main Authors: Hong Han, Zhipeng Xu, Kexin Guo, Yao Ni, Mingxue Ma, Haiyang Yu, Huanhuan Wei, Jiangdong Gong, Shuo Zhang, Wentao Xu
Format: Article
Language:English
Published: Wiley 2020-03-01
Series:Advanced Intelligent Systems
Subjects:
Online Access:https://doi.org/10.1002/aisy.201900176
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author Hong Han
Zhipeng Xu
Kexin Guo
Yao Ni
Mingxue Ma
Haiyang Yu
Huanhuan Wei
Jiangdong Gong
Shuo Zhang
Wentao Xu
author_facet Hong Han
Zhipeng Xu
Kexin Guo
Yao Ni
Mingxue Ma
Haiyang Yu
Huanhuan Wei
Jiangdong Gong
Shuo Zhang
Wentao Xu
author_sort Hong Han
collection DOAJ
description In biological synapses, short‐term plasticity is important for computation and signal transmission, whereas long‐term plasticity is essential for memory formation. Comparably, designing a strategy that can easily tune the synaptic plasticity of artificial synapses can benefit constructing an artificial neural system, where synapses with different short‐term plasticity (STP) and long‐term plasticity (LTP) are required. Herein, a strategy is designed that can easily tune the plasticity of crystallized conjugated polymer nanowire‐based synaptic transistors (STs) by low‐temperature solvent engineering. Essential synaptic functions are achieved, such as excitatory postsynaptic current (EPSC), paired‐pulse facilitation (PPF), spike‐frequency‐dependent plasticity (SFDP), spike‐duration‐dependent plasticity (SDDP) and spike‐number‐dependent plasticity (SNDP), and potentiation/depression. The balance between crystallinity and roughness is successfully adjusted by altering solvent compositions, and plasticity of the synaptic device is easily tuned between short term and long term. The evident transition from STP to LTP, good linearity and symmetry of potentiation and depression, and the broad dynamic working range of synaptic weight are achieved. This provides a facile way to tune synaptic plasticity at low temperatures and is applicable to future organic and flexible artificial nervous systems.
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spelling doaj.art-7dfb65eb686b46eb9ed974bc7ff0f8b42022-12-21T18:02:15ZengWileyAdvanced Intelligent Systems2640-45672020-03-0123n/an/a10.1002/aisy.201900176Tunable Synaptic Plasticity in Crystallized Conjugated Polymer Nanowire Artificial SynapsesHong Han0Zhipeng Xu1Kexin Guo2Yao Ni3Mingxue Ma4Haiyang Yu5Huanhuan Wei6Jiangdong Gong7Shuo Zhang8Wentao Xu9Institute of Optoelectronic Thin Film Devices and Technology Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin Nankai University Tianjin 300350 ChinaInstitute of Optoelectronic Thin Film Devices and Technology Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin Nankai University Tianjin 300350 ChinaInstitute of Optoelectronic Thin Film Devices and Technology Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin Nankai University Tianjin 300350 ChinaInstitute of Optoelectronic Thin Film Devices and Technology Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin Nankai University Tianjin 300350 ChinaInstitute of Optoelectronic Thin Film Devices and Technology Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin Nankai University Tianjin 300350 ChinaInstitute of Optoelectronic Thin Film Devices and Technology Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin Nankai University Tianjin 300350 ChinaInstitute of Optoelectronic Thin Film Devices and Technology Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin Nankai University Tianjin 300350 ChinaInstitute of Optoelectronic Thin Film Devices and Technology Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin Nankai University Tianjin 300350 ChinaInstitute of Optoelectronic Thin Film Devices and Technology Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin Nankai University Tianjin 300350 ChinaInstitute of Optoelectronic Thin Film Devices and Technology Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin Nankai University Tianjin 300350 ChinaIn biological synapses, short‐term plasticity is important for computation and signal transmission, whereas long‐term plasticity is essential for memory formation. Comparably, designing a strategy that can easily tune the synaptic plasticity of artificial synapses can benefit constructing an artificial neural system, where synapses with different short‐term plasticity (STP) and long‐term plasticity (LTP) are required. Herein, a strategy is designed that can easily tune the plasticity of crystallized conjugated polymer nanowire‐based synaptic transistors (STs) by low‐temperature solvent engineering. Essential synaptic functions are achieved, such as excitatory postsynaptic current (EPSC), paired‐pulse facilitation (PPF), spike‐frequency‐dependent plasticity (SFDP), spike‐duration‐dependent plasticity (SDDP) and spike‐number‐dependent plasticity (SNDP), and potentiation/depression. The balance between crystallinity and roughness is successfully adjusted by altering solvent compositions, and plasticity of the synaptic device is easily tuned between short term and long term. The evident transition from STP to LTP, good linearity and symmetry of potentiation and depression, and the broad dynamic working range of synaptic weight are achieved. This provides a facile way to tune synaptic plasticity at low temperatures and is applicable to future organic and flexible artificial nervous systems.https://doi.org/10.1002/aisy.201900176conjugated polymersnanowiressynaptic plasticityneuromorphic devicessynaptic transistors
spellingShingle Hong Han
Zhipeng Xu
Kexin Guo
Yao Ni
Mingxue Ma
Haiyang Yu
Huanhuan Wei
Jiangdong Gong
Shuo Zhang
Wentao Xu
Tunable Synaptic Plasticity in Crystallized Conjugated Polymer Nanowire Artificial Synapses
Advanced Intelligent Systems
conjugated polymers
nanowires
synaptic plasticity
neuromorphic devices
synaptic transistors
title Tunable Synaptic Plasticity in Crystallized Conjugated Polymer Nanowire Artificial Synapses
title_full Tunable Synaptic Plasticity in Crystallized Conjugated Polymer Nanowire Artificial Synapses
title_fullStr Tunable Synaptic Plasticity in Crystallized Conjugated Polymer Nanowire Artificial Synapses
title_full_unstemmed Tunable Synaptic Plasticity in Crystallized Conjugated Polymer Nanowire Artificial Synapses
title_short Tunable Synaptic Plasticity in Crystallized Conjugated Polymer Nanowire Artificial Synapses
title_sort tunable synaptic plasticity in crystallized conjugated polymer nanowire artificial synapses
topic conjugated polymers
nanowires
synaptic plasticity
neuromorphic devices
synaptic transistors
url https://doi.org/10.1002/aisy.201900176
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