As of March 2018
Research Area : Applied Superconductivity Laboratory
Research Themes:
- Fabrication of Superconducting Motor/Generator Using High Temperature Superconducting (HTS) Wires
- Development of Compact NMR/MRI Magnets Using HTS Bulks and Wires
- Developments of 3-D Superconducting Actuator and a Non-Contact Levitation System Using HTS Bulks
- Medical Application of HTS Magnet
- Development of Numerical Simulation Technique for HTS Application and Electrical Equipment
Representative Publication :
- SeokBeom Kim, Katusya Hojo and Daiki Miyazawa, “Study on the Magnetic Field Homogeneity of HTS Bulk Magnets Including the Degraded HTS Bulk for Developing the Compact NMR Relaxometry,” IEEE Trans. on Applied Superconductivity, Vol. 26, No. 4, 4302104, January 2016.
- Hiroshi Ueda, Yohei Imaichi, Tao Wang, Atsushi Ishiyama, So Noguchi, Sadanori Iwai, Hiroshi Miyazaki, Taizo Tosaka, Shunji Nomura, Tsutomu Kurusu, Shinichi Urayama, and Hidenao Fukuyama, “Numerical Simulation on Magnetic Field Generated by Screening Current in 10-T-Class REBCO Coil,” IEEE Trans. on Applied Superconductivity, Vol. 26, No. 4, 4701205, June 2016.
Research Area :Electric Power Conversion System Engineering Laboratory
(URL:http://www.ec.okayama-u.ac.jp/~epc/en/index.html)
Eiji HIRAKI, Professor
Nozomu NANATO, Associate Professor
Kazuhiro UMETANI, Assistant Professor
Research Themes:
- Protection and Diagnosis of Superconducting Magnets
- Compact and High Efficiency AC Power Supply with a Single Phase Superconducting Transformer
- Wireless Power Transfer Systems / High Frequency Induction Heating
- Innovative SRM Drive for EVs
Representative Publication :
- Tomohide Shirakawa, Genki Yamasaki, Kazuhiro Umetani and Eiji Hiraki, “Extremum Co-Energy Principle for Analyzing AC Current Distribution in Parallel-Connected Wires of High-Frequency Power Inductors,” IEEJ Journal of Industry Applications, Vol. 7, No.1, pp.35-42, Jan. 2018
- Kazuhiro Umetani, Kyota Aikawa and Eiji Hiraki, “Straightforward Measurement Method of Common Source Inductance for Fast Switching Semiconductor Devices Mounted On-board,” IEEE Transactions on Industrial Electronics, Vol. 64, Issue 10, pp.8258-8267, Oct. 2017
- Nozomu Nanato, Noriyuki Kishi, Yuhi Tanaka and Mikishi Kondo, “Basic study for a large AC current supply with a single phase air-core Bi2223 high temperature superconducting transformer,” Journal of Physics: Conference Series, Vol. 871, 012101, 2017
Research Area :Power System Control Engineering Laboratory
(URL:http://www.ec.okayama-u.ac.jp/~psc/index.html)
Shigeyuki FUNABIKI, Professor
Jun IMAI, Associate Professor
Akiko TAKAHASHI, Assistant Professor
Research Themes:
- Voltage Control Methods in Distribution Systems with a Large Number of PV Systems
- Optimal Allocation of FACTS in a High-Voltage Distribution System
- Measuring Methods for Solar Irradiance Based on Image Analyses
- Active Vibrating Control of Robot Arms: Digital Real Time Implementation
- Temperature Profile Control of Blast Furnaces: Sensor Optimal Location
Representative Publication :
- Akiko Takahashi, Akihiro Yamagata, Jun Imai and Shigeyuki Funabiki, “Decomposition of Fluctuating Photovoltaic Generation Power in Frequency Bands and Analysis of Chaotic Properties,” Electrical Engineering in Japan, Vol. 201, No. 4, pp. 26-33, December 2017.
- Akiko Takahashi, Hiroaki Morio, Jun Imai and Shigeyuki Funabiki, “An Estimation Method for Solar Radiation Intensity Using Web Camera,” Journal of the Japan Institute of Energy, Vol. 94, No. 11, pp. 1330-1336, November 2015.
- Jun Imai, Katsuyuki Noso, Akiko Takahashi, and Shigeyuki Funabiki, “On Mixed Galerkin Modeling for Controller Design of Boundary Control Systems,” IFAC-PapersOnLine, Vol.50, Issue 1, pp. 7133-7138, 2017.
Research Area : Nanodevice and Materials Engineering Laboratory
(URL:http://www.ec.okayama-u.ac.jp/~dm/index_e.html)
Yasuhiko HAYASHI, Professor
Yoshifumi YAMASHITA, Associate Professor
Takeshi NISHIKAWA, Assistant Professor
Masaki HADA, Assistant Professor
Research Themes:
- Advanced Nanocarbon Materials & Devices, Organic Electronics Materials & Devices
- Defect Properties and Engineering in Semiconductor Crystals
- Material Processing by Atmospheric Pressure Plasmas
- Photoinduced Structural Dynamics of Functional Materials Explored with Femtosecond Electron Diffraction and Optical Spectroscopy
Representative Publication :
- Masaki Hada, Yoichi Hasegawa, Ryota Nagaoka, Tomoya Miyake, Ulugbek Abdullaev, Hiromi Ota, Takeshi Nishikawa, Yoshifumi Yamashita and Yasuhiko Hayashi, ” In-situ X-ray diffraction reveals the degradation of crystalline CH3NH3PbI3 by water-molecule collisions at room temperature” Jpn. J. Appl. Phys. 57, 028001 (2018).
- Yoshifumi Yamashita, Ryu Nakata, Takeshi Nishikawa, Masaki Hada, and Yasuhiko Hayashi, “Expansion of Shockley stacking fault observed by scanning electron microscope and partial dislocation motion in 4H-SiC,” J. Appl. Phys. 123,161580 (2018).
- Masaki Hada, Shohei Saito, Sei’ichi Tanaka, Ryuma Sato, Masahiko Yoshimura, Kazuhiro Mouri, Kyohei Matsuo, Shigehiro Yamaguchi, Mitsuo Hara, Yasuhiko Hayashi, Fynn Röhricht, Rainer Herges, Yasuteru Shigeta, Ken Onda, R. J. Dwayne Miller, ” Structural Monitoring of the Onset of Excited-State Aromaticity in a Liquid Crystal Phase” J. Am. Chem. Soc. 139, 15792–15800 (2017).
Research Area : Multiscale Device Design (Tsuruta) and Microwave Circuit (Sanagi) Laboratory
(URL: http://www.ec.okayama-u.ac.jp/~mdd/index.html, http://www.ec.okayama-u.ac.jp/~micro/index.html)
Kenji TSURUTA, Professor
Minoru SANAGI, Associate Professor
Atsushi ISHIKAWA, Assistant Professor
Research Themes:
- Ab-Initio/Multiscale Computational Design of Energy-Harvesting Nanomaterials/Nanodevices
- Phononic Crystals and Acoustic Metamaterials for Energy Harvesting Systems
- Plasmonic Metamaterials for Optical Functional Devices
- Microwave Multiple-Port Power Divider/Combiner
- Efficient Microwave-DC Interconversion
Representative Publication :
- A. Ishikawa, S. Hara, T. Tanaka, Y. Hayashi, and K. Tsuruta, "Cross-Polarized Surface-Enhanced Infrared Spectroscopy by Fano-Resonant Asymmetric Metamaterials," Scientific Reports Vol. 7, pp. 3205-1-8, June 2017.
- Y. Iwasaki, K. Tsuruta, and A. Ishikawa, "Rectification of Lamb wave propagation in thin plates with piezo-dielectric periodic structures," Japanese Journal of Applied Physics Vol. 55, pp. 07KB02-1-4, May 2016.
- M. Sanagi, J. Fujiwara, K. Fujimori, and S. Nogi, “Beam Control in Unilaterally Coupled Active Antennas with Self-oscillating Harmonic Mixers,” IEICE Trans. Electron., Vol.E88-C, No.7, pp.1375-1381, July 2005.
Research Area : Optoelectronic and Electromagnetic Wave Engineering Laboratory
(URL:http://www.ec.okayama-u.ac.jp/~opt/index.html)
Hideki FUKANO, Professor
Kazuhiro FUJIMORI, Associate Professor
Shuji TAUE, Assistant Professor
Research Themes:
- Optical Fiber Sensors
- Optically Powered Sensor
- Study of Wireless Power Transmission
- Study of Antenna
Representative Publication :
- Hideki Fukano, Daichi Watanabe, and Shuji Taue, "Sensitivity characteristics of multimode-interference optical-fiber temperature-sensor with solid cladding material," IEEE Sensors Journal, Vol. 16, No. 24, pp. 8921-8927, 2016.
- Shuji Taue, Tsuyoshi Takahashi, and Hideki Fukano, "Coating-free reflection technique for fiber-optic sensors based on multimode interference: a temperature-sensing study," Jpn. J. Appl. Phys., Vol. 55, 08RE03, 2016.