Research paper on neuromorphic systems by Mutsumi Kimura’s research group published in international IEEE journal

2022.11.01

Multilayer Crossbar Array of Amorphous Metal-Oxide Semiconductor Thin Films for Neuromorphic Systems

The Innovative Materials and Processing Research Center pursues research with three consistent objectives:

(1) High-level, world-class materials science research that serves the development of an environmentally and naturally sustainable society (knowledge creation)

(2) To make a positive contribution to society by generating seeds of research that lead to academic knowledge and commercial application (knowledge utilization)

(3) To make a positive contribution to society by nurturing young researchers and students (knowledge transmission)

Etsuko Iwagi (2nd-year master’s student, Graduate School of Science and Technology) from Mutsumi Kimura’s research group at the Innovative Materials and Processing Research Center and colleagues recently published a research paper on implementing amorphous metal-oxide semiconductor thin films in neuromorphic systems in an international journal of the IEEE^*1.

Multilayer Crossbar Array of Amorphous Metal-Oxide Semiconductor Thin Films for Neuromorphic Systems | IEEE Journals & Magazine | IEEE Xplore

Etsuko Iwagi, who conducted the experiments and is the first author on the paper, discovered a technique that could create single computer chips with functional performance equivalent to the large-scale integrated circuits (LSICs) required by large computers. This technique has now been recognized and the paper describing it has been published.

Neuromorphic systems are beginning to be used in large computers (servers) for general artificial intelligence applications such as character recognition, speech recognition, image recognition, text composition, and conversation.

The adoption of neuromorphic systems will allow artificial intelligence to be installed on our mobile devices (personal computers, smartphones, smartwatches, glasses, etc.) and used locally without an Internet connection to a larger computer. Using artificial intelligence without a server connection will enable real-time, high-speed processing without communication delays. The production of neuromorphic chips could give each person their own customized and dedicated artificial intelligence, ushering in an era when artificial intelligence becomes an ever more integral part of our lives.

As exemplified by this research, the Innovative Materials and Processing Research Center tackles manufacturing through the lens of “use,” and through research, builds innovative designs and manufacturing processes through the lens of energy and resource conservation that create materials for a better future for all, while also being committed to researching reuse processes through the lens of “restoration” for a sustainable, recycling-oriented society.

The Innovative Materials and Processing Research Center intends to continue to pursue research aimed at developing materials for a sustainable society.

^{*1 IEEE is an abbreviation of Institute of Electrical and Electronics Engineers. IEEE is a professional organization with over 400,000 members from over 160 countries.}

[Presented Paper]
Title: Multilayer Crossbar Array of Amorphous Metal-Oxide Semiconductor Thin Films for Neuromorphic Systems
Published in: IEEE Journal of the Electron Devices Society (Volume: 10)
https://doi.org/10.1109/JEDS.2022.3203364
Authors:

– Etsuko Iwagi (Department of Electronics and Informatics, Ryukoku University)
– Takumi Tsuno (Faculty of Advanced Science and Technology, Ryukoku University / Graduate School of Science and Technology, Nara Institute of Science and Technology)
– Takahito Imai (Faculty of Advanced Science and Technology, Ryukoku University)
– Yasuhiko Nakashima (Graduate School of Science and Technology, Nara Institute of Science and Technology)
– Mutsumi Kimura (Faculty of Advanced Science and Technology, Ryukoku University / Graduate School of Science and Technology, Nara Institute of Science and Technology)

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