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Chitosan-Based Flexible Memristors with Embedded Carbon Nanotubes for Neuromorphic Electronics

In this study, we propose high-performance chitosan-based flexible memristors with embedded single-walled carbon nanotubes (SWCNTs) for neuromorphic electronics. These flexible transparent memristors were applied to a polyethylene naphthalate (PEN) substrate using low-temperature solution processing...

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Detalles Bibliográficos
Autores principales: Min, Jin-Gi, Cho, Won-Ju
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8541661/
https://www.ncbi.nlm.nih.gov/pubmed/34683310
http://dx.doi.org/10.3390/mi12101259
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author Min, Jin-Gi
Cho, Won-Ju
author_facet Min, Jin-Gi
Cho, Won-Ju
author_sort Min, Jin-Gi
collection PubMed
description In this study, we propose high-performance chitosan-based flexible memristors with embedded single-walled carbon nanotubes (SWCNTs) for neuromorphic electronics. These flexible transparent memristors were applied to a polyethylene naphthalate (PEN) substrate using low-temperature solution processing. The chitosan-based flexible memristors have a bipolar resistive switching (BRS) behavior due to the cation-based electrochemical reaction between a polymeric chitosan electrolyte and mobile ions. The effect of SWCNT addition on the BRS characteristics was analyzed. It was observed that the embedded SWCNTs absorb more metal ions and trigger the conductive filament in the chitosan electrolyte, resulting in a more stable and wider BRS window compared to the device with no SWCNTs. The memory window of the chitosan nanocomposite memristors with SWCNTs was 14.98, which was approximately double that of devices without SWCNTs (6.39). Furthermore, the proposed SWCNT-embedded chitosan-based memristors had memristive properties, such as short-term and long-term plasticity via paired-pulse facilitation and spike-timing-dependent plasticity, respectively. In addition, the conductivity modulation was evaluated with 300 synaptic pulses. These findings suggest that memristors featuring SWCNT-embedded chitosan are a promising building block for future artificial synaptic electronics applications.
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spelling pubmed-85416612021-10-24 Chitosan-Based Flexible Memristors with Embedded Carbon Nanotubes for Neuromorphic Electronics Min, Jin-Gi Cho, Won-Ju Micromachines (Basel) Article In this study, we propose high-performance chitosan-based flexible memristors with embedded single-walled carbon nanotubes (SWCNTs) for neuromorphic electronics. These flexible transparent memristors were applied to a polyethylene naphthalate (PEN) substrate using low-temperature solution processing. The chitosan-based flexible memristors have a bipolar resistive switching (BRS) behavior due to the cation-based electrochemical reaction between a polymeric chitosan electrolyte and mobile ions. The effect of SWCNT addition on the BRS characteristics was analyzed. It was observed that the embedded SWCNTs absorb more metal ions and trigger the conductive filament in the chitosan electrolyte, resulting in a more stable and wider BRS window compared to the device with no SWCNTs. The memory window of the chitosan nanocomposite memristors with SWCNTs was 14.98, which was approximately double that of devices without SWCNTs (6.39). Furthermore, the proposed SWCNT-embedded chitosan-based memristors had memristive properties, such as short-term and long-term plasticity via paired-pulse facilitation and spike-timing-dependent plasticity, respectively. In addition, the conductivity modulation was evaluated with 300 synaptic pulses. These findings suggest that memristors featuring SWCNT-embedded chitosan are a promising building block for future artificial synaptic electronics applications. MDPI 2021-10-17 /pmc/articles/PMC8541661/ /pubmed/34683310 http://dx.doi.org/10.3390/mi12101259 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Min, Jin-Gi
Cho, Won-Ju
Chitosan-Based Flexible Memristors with Embedded Carbon Nanotubes for Neuromorphic Electronics
title Chitosan-Based Flexible Memristors with Embedded Carbon Nanotubes for Neuromorphic Electronics
title_full Chitosan-Based Flexible Memristors with Embedded Carbon Nanotubes for Neuromorphic Electronics
title_fullStr Chitosan-Based Flexible Memristors with Embedded Carbon Nanotubes for Neuromorphic Electronics
title_full_unstemmed Chitosan-Based Flexible Memristors with Embedded Carbon Nanotubes for Neuromorphic Electronics
title_short Chitosan-Based Flexible Memristors with Embedded Carbon Nanotubes for Neuromorphic Electronics
title_sort chitosan-based flexible memristors with embedded carbon nanotubes for neuromorphic electronics
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8541661/
https://www.ncbi.nlm.nih.gov/pubmed/34683310
http://dx.doi.org/10.3390/mi12101259
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