2023
Satya Prakash Pati, “Towards Ultra Low Power Dissipation in Electronic Devices through Voltage-controlled Phenomena and Device Architecture (invited)”
ICLED-2023 Singapore, Jun 29, 2023
Takeaki Yajima, “Designing neuromorphic devices using protons (invited)”
IWDTF 2023, Oct 24, 2023
Takeaki Yajima, “Neuromorphic Devices Using Oxide Heterostructures and Protons (invited)”
JSAP Autumun, Sep 20, 2023
Takeaki Yajima, “Neuromorphic information processing using proton (invited)”
Neuromorphic system with new materials and mechanism, Aug 31, 2023
Takeaki Yajima, “Neuromorphic Functional Design Using Solid-State Proton Device(invited)”
The 85th Solid State Ionics Meeting, Jul 21, 2023
Takeaki Yajima, “Edge AI using spiking neural networks and its application to energy harvesting (invited)”
Energy Harvesting Consortium General Meeting, Jun 16, 2023
SatyaPrakash Pati, Satoshi Hamasuna, Takeaki Yajima, “Modulation of synaptic behavior in a 2-terminal protonic device through proton potential and applied voltage
JSAP Spring program#18a-A302-6(Yotsuya, 2023.3)
Satoshi Hamasuna, SatyaPrakash Pati, Takeaki Yajima, “Equivalence of gate-induced and temperature-induced phase transitions in VO2 three-terminal devices”
JSAP Spring program#15a-A409-2(Yotsuya, 2023.3)
Takeaki Yajima, “Design of Neuromorphic Information Devices Using Protons(invited)”
JSAP Spring program#16a-A404-7(Yotsuya, 2023.3)
Trends in Power Supply Circuit Technology for Widespread Use of Environmental Power Generation(invited)”
Takeaki Yajima
SDRJ Committee, Jun 11, 2023
2022
Satya Prakash Pati, Satoshi Hamasuna, Takeaki Yajima, “An Ultra-low-voltage Synaptic Behavior of WO3/Pd based 2-terminal Protonic Memristive Device”
ssdm2022 H-2-02(online, 2022.9)
Yin Hang and Takeaki Yajima, “Study on 1mV-class boost circuits for thermoelectric power generation”
IEICE Society Conference 2022 program#C-12-1(Online, 2022.9)
Satya Prakash Pati, Satoshi Hamasuna, and Takeaki Yajima, “Ultra-sharp conductance change with proton potential in WO3 heterostructure”
transition are linked” JSAP Autumn program#21a-B204-4(Kawauti-Kita, 2022.9)
Satoshi Hamasuna, Satya Prakash Pati, and Takeaki Yajima, “Study of the rate of insulator transition in VO2 three terminal device”
transition are linked” JSAP Autumn program#21p-C105-10(Kawauti-Kita, 2022.9)
Neuromorphic device design for a sustainable society (invited)
Takeaki Yajima
Gakushin R031 Committee on Hybrid Quantum Nanotechnology, 7th meeting, Aug 3, 2022
Satya Prakash Pati, Satoshi Hamasuna, and Takeaki Yajima, “Electrical control of two-terminal protonic device using an amorphous WO3 thin film”
transition are linked” JSAP Spring program#23p-E204-6(Sagamihara, 2022.3).
Satoshi HAMASUNA, Satya Prakash PATI, and Takeaki YAJIMA, “Static and transient properties of the VO2 metal-insulator
transition are linked” JSAP Spring program#22a-E204-7(Sagamihara, 2022.3).
Smart energy extraction from energy harvesters using timing-based asynchronous digital circuits (invited)
Takeaki Yajima
IEEE-NEMS2022, Apr 15, 2022
Low-power circuits for energy harvesters based on spiking-neuron delay elements (invited)
Takeaki Yajima
WuMW2021, Apr 4, 2022
Next-generation switching devices based on metal-insulator transitions (invited)
Takeaki Yajima
ISPlasma2022, Mar 9, 2022
2021
Codesign of materials and circuits for neuromorphic edge computing (invited)
Takeaki Yajima
Symposium of The Society of Nano Science and Technology, Dec 1, 2021
Circuit for vibration power generation by asynchronous digital control (invited)
Takeaki Yajima
Cutting edge of energy harvesting related technology (Japan Society of Applied Physics Energy Harvesting Research Group), Nov 22, 2021
Ultra-sharp three-terminal switch using nano-scale phase transition material (invited)
Takeaki Yajima
34th International Microprocesses and Nanotechnology Conference (MNC 2021), Oct 28, 2021
Research on low power electronics based on neuron circuits and materials properties (invited)
Takeaki Yajima
Neuromorph Lunch-on Seminar, Oct 20, 2021
2020
VO2 Mott Transistors for Low-Voltage ON/OFF Switching. (invited)
Takeaki Yajima
21th International Symposium on Eco-materials Processing and Design (ISEPD) (2020, Yantai, China) 2020
Circuit for ultra energy-saving environmental power generation using spiking neurons (invited)
Takeaki Yajima
Spring Symposium of the Japan Society of Applied Physics (Development of Energy Harvesting for a Super Smart Society) (2020, Tokyo, Japan). 2020
2019
Designing Neuron Functionality Based on Phase Transition Materials. (invited)
Takeaki Yajima
Asia-Pacific Workshop on Fundamentals and Applications of Advanced Semiconductor Devices (AWAD) (2019, Busan, Korea). 2019
Impact of Scaling the VO2-Channel Mott Transistor below Material Correlation Length. (invited)
Takeaki Yajima
AIST Seminar (2019, Tsukuba, Japan) 2019
Design of neuromorphic devices using material properties (invited)
Takeaki Yajima
Institute of Electrical and Information Engineers Society Conference 2019, Osaka University. (2019, Osaka, Japan). 2019
2018
2017
Nanoscale Hydrogen Doping to Oxides Heterointerfaces via Electrochemistry. (invited)
Takeaki Yajima
BIT’s 3rd Annual World Congress of Smart Materials-2017 (2017, Bangkok, Thailand). 2017
Neuron Circuit Design Using Metal-Insulator Transition of VO2 (invited)
Takeaki Yajima
Joint Project Research Group, Research Institute of Electrical Communication, Tohoku University (2017, Sendai, Japan). 2017
Capacitorless Neuron Circuits Using Metal-Insulator Transition Devices (invited)
Takeaki Yajima
The Institute of Electronics, Information and Communication Engineers (IEICE) ICD/SDM/ITE-ISE Study Group (2017, Sapporo, Japan). 2017
Study of the physical properties of VO2 thin films and their application to neuromorphology (invited)
Takeaki Yajima
The 25th Core-to-Core Young Researcher Development Program Seminar (2017, Tokyo, Japan). 2017
Possibility of novel electronic devices and circuits based on the phase transition materials. (invited)
Takeaki Yajima
Technical Committee on Nanoelectronics New Function Creation and Integration Technology, IEEJ (2017, Tokyo, Japan). 2017
Novel electronic devices and circuits based on the phase transition materials. (invited)
Takeaki Yajima
An Interdisciplinary Discussion on New Opportunities in Oxide Research (2017, Fukuoka, Japan) 2017
Novel Functional Passive Devices for Diversified Analog Signal Processing – Fabrication and Application of VO2 Volatile Switches (invited)
Takeaki Yajima
Silicon Materials and Devices Research Group (2017, Tokyo). 2017
2016
Collective gate modulation in Mott transistors with ultrathin VO2 channels. (invited)
Takeaki Yajima
Asia-Pacific Workshop on Fundamentals and Applications of Advanced Semiconductor Devices (AWAD) (2016, Hakodate, Japan) 2016
Time Response Characteristics of the VO2 Mott Transistor. (invited)
Takeaki Yajima
JSPS MEETING 2016 (C2C Program) (2016, Juelich, Germany). 2016
Engineering Proton Volatility in Oxides for Two-Terminal Neuromorphic Devices. (invited)
Takeaki Yajima
Neuromorpic: from out-of-equilibrium physics to deep learning (AIST mini-Workshop) (2016, Tsukuba, Japan). 2016
Electrochemical hydrogen doping to oxides heterointerfaces (invited)
Takeaki Yajima
SNU-UT Ad-hoc Workshop on Electronic and ionic processes at heterogeneous interfaces (2016, Tokyo). 2016
Mobility Enhancement and Room Temperature Ion Implantation in TiO2 Channel Transistors (invited)
Takeaki Yajima
The 21st Workshop on Interface Technology for Electronic Devices (2016, Mishima). 2016
2015
Interaction between 2D Electrons and 3D Metal-Insulator Transitions in VO2-Channel Transistors. (invited)
Takeaki Yajima
CEMS Topical Meeting on Oxide Interfaces 2015 (2015, Wako, Japan). 2015
Nanoscale electrochemical doping to wide gap oxide semiconductor. (invited)
Takeaki Yajima
SNU-UT Ad-hoc Workshop on Electronic and ionic processes at heterogeneous interfaces (2015, Seoul, Korea). 2015
2014
2013
Artificial interface dipoles at oxide heterointerfaces: fundamentals and devices. (invited)
Takeaki Yajima
SNU-UT Workshop on Oxide Systems for Energy & Electric Applications (2013, Seoul). 2013
2012
Interfacial Dipole Control in Oxide Schottky Junctions and Fabrication of Metal-Based Transistors (invited)
Takeaki Yajima
Autumn Symposium of the Japan Society of Applied Physics “Frontiers of Strongly Correlated Electron Control by Oxide Superstructures (2012, Matsuyama). 2012
2011
Dipole Engineering and Schottky Barrier Height Control at Oxide Hetero-interfaces (invited)
Takeaki Yajima
Commemorative Lecture for the Encouragement Award of the Spring Meeting of the Japan Society of Applied Physics (2011, Atsugi). 2011