Versatile Functionality of Four-Terminal TiO₂₋ₓ Memristive Devices as Artificial Synapses for Neuromorphic Computing

Miyake, Ryotaro; Nagata, Zenya; Adachi, Kenta; Hayashi, Yusuke; Tohei, Tetsuya; Sakai, Akira

doi:https://doi.org/10.1021/acsaelm.2c00161

Versatile Functionality of Four-Terminal TiO₂₋ₓ Memristive Devices as Artificial Synapses for Neuromorphic Computing

Miyake, Ryotaro; Nagata, Zenya; Adachi, Kenta et al.

ACS Applied Electronic Materials, 2022, 4(5), 2326-2336

アクセス数:873件（2025-08-28 18:28 集計）

固定URL: https://hdl.handle.net/11094/88313

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タイトル	Versatile Functionality of Four-Terminal TiO₂₋ₓ Memristive Devices as Artificial Synapses for Neuromorphic Computing
著者	著者名 Miyake, Ryotaro
	著者名 Nagata, Zenya
	著者名 Adachi, Kenta
	NRID 1000000800484 1000000800484 researchmap permalink YusukeHayashi YusukeHayashi Scopus Author ID 55712779600 55712779600 著者名 Hayashi, Yusuke
	NRID 1000000463878 1000000463878 ORCID 0000-0002-4113-2566 0000-0002-4113-2566 researchmap permalink ttohei ttohei Scopus Author ID 55880985600 55880985600 著者名 Tohei, Tetsuya
	NRID 1000020314031 1000020314031 ORCID 0000-0002-0654-504X 0000-0002-0654-504X researchmap permalink read0192520 read0192520 Scopus Author ID 7402911242 7402911242 著者名 Sakai, Akira
キーワード等	artificial synapse
	memristive device
	heterosynaptic
	neuromodulation
	reduced TiO₂₋ₓ
	gate-tuning
	multiterminal
	resistive switching
内容	Ryotaro Miyake, Zenya Nagata, Kenta Adachi, Yusuke Hayashi, Tetsuya Tohei, and Akira Saka. Versatile Functionality of Four-Terminal TiO₂₋ₓ Memristive Devices as Artificial Synapses for Neuromorphic Computing. ACS Applied Electronic Materials 2022 4 (5), 2326-2336. DOI: 10.1021/acsaelm.2c00161. ©2022 American Chemical Society
抄録	Brain-inspired computing systems, which emulate the activity of biological synapses and neurons, are becoming more and more essential owing to their potential ability to solve the von Neumann bottleneck. Various types of memristive devices have been proposed to achieve information processing through synaptic functions. However, biological synapses have many complicated functions, such as heterosynaptic plasticity and the related neuromodulation, that are difficult to implement in conventional two-terminal memristors because of the requirement for multiple inputs. In this study, simple four-terminal memristive devices consisting of epitaxial thin films of Ti₂₋ₓ are fabricated and their capacity to implement synaptic functions are explored. These devices utilize the two-dimensional variation of the oxygen vacancy distribution in the TiO₂₋ₓ film to realize advanced heterosynaptic functionality, including tunable spike-timing-dependent plasticity, heterosynaptic plasticity mimicking habituation and sensitization, and Pavlovian conditioning, through multiterminal voltage inputs. The present results demonstrate the striking versatility of our four-terminal device for implementing the diverse and complex functions of artificial synapses on a single memristive passive element.
出版者	American Chemical Society
収録物名	ACS Applied Electronic Materials
巻(号)	4(5)
ページ	2326-2336
刊行年月	2022-05-24
言語	英語
ハンドルURL	https://hdl.handle.net/11094/88313
eISSN	26376113
関連情報 (isVersionOf)	DOI (出版社版) https://doi.org/10.1021/acsaelm.2c00161
アクセス権	open access
権利情報	This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Electronic Materials, © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsaelm.2c00161.
出版タイプ	Accepted Manuscript
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	ACS Applied Electronic Materials. 2022, 4(5), p. 2326-2336
DC.title	Versatile Functionality of Four-Terminal TiO₂₋ₓ Memristive Devices as Artificial Synapses for Neuromorphic Computing
DC.creator	Miyake, Ryotaro
	Nagata, Zenya
	Adachi, Kenta
	Hayashi, Yusuke
	Tohei, Tetsuya
	Sakai, Akira
DC.publisher	American Chemical Society
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2022-05-24
DC.identifier	https://doi.org/10.1021/acsaelm.2c00161
DC.subject	artificial synapse
	memristive device
	heterosynaptic
	neuromodulation
	reduced TiO₂₋ₓ
	gate-tuning
	multiterminal
	resistive switching
DC.description	Ryotaro Miyake, Zenya Nagata, Kenta Adachi, Yusuke Hayashi, Tetsuya Tohei, and Akira Saka. Versatile Functionality of Four-Terminal TiO₂₋ₓ Memristive Devices as Artificial Synapses for Neuromorphic Computing. ACS Applied Electronic Materials 2022 4 (5), 2326-2336. DOI: 10.1021/acsaelm.2c00161. ©2022 American Chemical Society
DCTERMS.abstract	Brain-inspired computing systems, which emulate the activity of biological synapses and neurons, are becoming more and more essential owing to their potential ability to solve the von Neumann bottleneck. Various types of memristive devices have been proposed to achieve information processing through synaptic functions. However, biological synapses have many complicated functions, such as heterosynaptic plasticity and the related neuromodulation, that are difficult to implement in conventional two-terminal memristors because of the requirement for multiple inputs. In this study, simple four-terminal memristive devices consisting of epitaxial thin films of Ti₂₋ₓ are fabricated and their capacity to implement synaptic functions are explored. These devices utilize the two-dimensional variation of the oxygen vacancy distribution in the TiO₂₋ₓ film to realize advanced heterosynaptic functionality, including tunable spike-timing-dependent plasticity, heterosynaptic plasticity mimicking habituation and sensitization, and Pavlovian conditioning, through multiterminal voltage inputs. The present results demonstrate the striking versatility of our four-terminal device for implementing the diverse and complex functions of artificial synapses on a single memristive passive element.
DC.rights	This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Electronic Materials, © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsaelm.2c00161.
DC.format	88313
citation_title	Versatile Functionality of Four-Terminal TiO₂₋ₓ Memristive Devices as Artificial Synapses for Neuromorphic Computing
citation_author	Miyake, Ryotaro
	Nagata, Zenya
	Adachi, Kenta
	Hayashi, Yusuke
	Tohei, Tetsuya
	Sakai, Akira
citation_publisher	American Chemical Society
citation_language	英語
citation_date	2022-05-24
citation_journal_title	ACS Applied Electronic Materials
citation_volume	4
citation_issue	5
citation_firstpage	2326
citation_lastpage	2336
citation_doi	https://doi.org/10.1021/acsaelm.2c00161
citation_public_url	https://hdl.handle.net/11094/88313

Versatile Functionality of Four-Terminal TiO₂₋ₓ Memristive Devices as Artificial Synapses for Neuromorphic Computing

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