Yajima Takeaki

Yajima Takeaki | Yajima Takeaki

Affiliation and department：
Job title： Associate Professor
Homepage URL (1)： https://con.ed.kyushu-u.ac.jp/

Research field (3)： Mathematical physics and basic theory , Electric/electronic material engineering , Thin-film surfaces and interfaces

Research keywords (8)： energy harvesting , neuromorphic , proton , vanadium dioxide , low power , Mott transistor , phase transition , oxide electronics

Research theme for competitive and other funds (9)：

2022 - 2027 Biomimetic general-purpose power supply circuit for autonomous sensor nodes
2019 - 2025 Edge real-time learning platform using spiking net
2020 - 2023 固体中プロトンを利用した0.1Vエレクトロニクスの創成
2020 - 2023 ゲート誘起相転移の律速過程解明による相転移トランジスタ高速化の研究
2017 - 2021 Development of circuit technology for energy harvesting using resistive switching materials

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Papers (80)：

Satya Prakash Pati, Takeaki Yajima. Review of solid-state proton devices for neuromorphic information processing. Japanese Journal of Applied Physics. 2024. 63. 3. 030801-030801
Keisuke Takano, Takeaki Yajima, Satoshi Kawakami. Design of The Ultra-Low-Power Driven VMM Configurations for μW Scale IoT Devices. 2023 IEEE 16th International Symposium on Embedded Multicore/Many-core Systems-on-Chip (MCSoC). 2023
Takeaki Yajima. Resonant frequency modulation in inductive vibration power generator via resistive impedance control. IEEE Transactions on Power Electronics. 2023. 39. 1. 1269-1278
Hisashi Inoue, Hiroto Tamura, Ai Kitoh, Xiangyu Chen, Zolboo Byambadorj, Takeaki Yajima, Yasushi Hotta, Tetsuya Iizuka, Gouhei Tanaka, Isao H. Inoue. Long-time-constant leaky-integrating oxygen-vacancy drift-diffusion FET for human-interactive spiking reservoir computing. 2023 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits). 2023
Takeaki Yajima, Yusuke Samata, Satoshi Hamasuna, Satya Prakash Pati, Akira Toriumi. Zero-dimensionality of a scaled-down VO2 metal-insulator transition via high-resolution electrostatic gating. NPG Asia Materials. 2023. 15. 39-1-39-6

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MISC (7)：

Takeaki Yajima. Energy-saving IoT technology learned from biological neural circuits. Applied Physics. 2024. 93. 5. 289-293
Takeaki YAJIMA. Energy-saving Electronics Based on the Analogy of Neural Circuits. The Journal of The Institute of Electrical Engineers of Japan. 2024. 144. 2. 84-87
Takeaki Yajima. Low Power IoT Circuit Technology Using Spiking Neuron Circuits. Functional Materials. 2021. 41. 3. 37-43
Takeaki Yajima. Study on Circuit Technologies Using Metal-Insulator Transition Materials. IEICE JPN Ed.C. 2020. J103-C. 10. 420-427
T. Yajima, Y. Hikita, M. Minohara, C. Bell, J. A. Mundy, L. Fitting Kourkoutis, D. A. Muller, H. Kumigashira, M. Oshima, H. Y. Hwang. Engineering Artificial Interface Dipoles at Oxide Heterointerfaces. PF Activity Report. 2015. 32. 13

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Patents (14)：

昇圧装置および昇圧システム(*1mVから昇圧できる熱電発電用昇圧回路)
Electrical power circuit and module
モジュール回路、及びレザバー回路(*CMOS回路でレザバーコンピューティングを実装する技術)
Vibration power generators and energy harvesting circuits
Spiking neuron circuit and system

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Books (1)：

環境発電ハンドブック第2版
エヌ・ティー・エス 2021 ISBN:9784860437480

Lectures and oral presentations (43)：

A Peek into the Future of AI x Optics from AI x Computing Device
(2024)
Neuromorphic device design using oxide phase transition and protons
(The 258th JOEM Workshop 2023)
Designing neuromorphic devices using protons
(IWDTF 2023 (2023, Kanazawa, Japan) 2023)
Neuromorphic Devices Using Oxide Heterostructures and Protons
(The 84th JSAP Autumun Meeting (2023, Kumamoto) 2023)
Neuromorphic information processing using proton
(Neuromorphic system with new materials and mechanism (2023, Osaka) 2023)

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Education (4)：

2009 - 2012 The University of Tokyo Graduate School of Frontier Science Department of Advanced Materials Science
2005 - 2007 The University of Tokyo Department of Applied Physics
2003 - 2005 The University of Tokyo Natural Sciences I
2000 - 2003 Hakuryo high school

Professional career (1)：

Doctor (The University of Tokyo)

Work history (5)：

2020/10 - 現在 Kyushu University Faculty of Information Science and Electrical Engineering Department of Information Electronics
2017/10 - 2021/03 JST Presto researcher
2012/08 - 2020/09 The University of Tokyo Department of Materials Engineering Assistant Professor
2011/08 - 2012/07 Stanford University SLAC National Accelerator Laboratory Visiting Scientist
2011/04 - 2012/07 JST DC2

Committee career (15)：

2023/11 - 現在 SSDM2024-25 Executive comittee (secretary)
2023/04 - 現在応用物理学会中分類(酸化物エレクトロニクス) プログラム委員
2021/07 - 現在 Neuromorph Center External committee member
2020/10 - 現在 Silicon Nanoelectronics Workshop Technical Program Committee
2019/12 - 現在 The System Device Roadmap Committee of Japan (SDRJ) More than Moore working group secretary

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Awards (15)：

2022/04 - Ministry of Education, Culture, Sports, Science and Technology Young Scientist Award by Minister of Education, Culture, Sports, Science and Technology Research on power-saving information processing based on oxide functions
2019/10 - International Workshop on Oxide Electronics The Oxide Electronics Prize for Excellency in Research
2019/09 - SSDM 2019 Young Researcher Award New Operation Mode of VO2-Channel Mott Transistors for Ultra-Sharp ON/OFF Switching
2019/01 - JST PREST Exchange Meeting, Poster Award Development of sub-nW ultra-low-power circuit inspired by neuronal network
2018/09 - Japan Society of Applied Physics 40th Japan Society of Applied Physics Paper Award Reexamination of Fermi level pinning for controlling Schottky barrier height at metal/Ge interface.

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Association Membership(s) (5)：

JSAP Silicon Technology Devision , IEEE , JAPANESE NEURAL NETWORK SOCIETY , THE JAPAN SOCIETY OF APPLIED PHYSICS , Material Research Society

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