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...
Main Authors: | , , , , , , , , , |
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Format: | Article |
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Wiley
2020-03-01
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Series: | Advanced Intelligent Systems |
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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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issn | 2640-4567 |
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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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