Research Output 1983 2019

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2019
1 Citation (Scopus)

A simple conducted noise modeling method for DC-DC converters with accurate noise source model

Zhang, B., Zhang, S., Shoyama, M. & Takegami, E., Jan 25 2019, In : Research Reports on Information Science and Electrical Engineering of Kyushu University. 24, 1, p. 9-15 7 p.

Research output: Contribution to journalArticle

DC-DC converters

Commercial Design and Operating Characteristics of a 300 kW Superconducting Induction Heater (SIH) Based on HTS Magnets

Choi, J., Kim, T., Lee, C. K., Jeon, D. S., Park, G. W., Cho, S., Park, M., Yu, I. K. & Iwakuma, M., Aug 1 2019, In : IEEE Transactions on Applied Superconductivity. 29, 5, 3700105.

Research output: Contribution to journalArticle

Superconducting magnets
superconducting magnets
heaters
induction
Metals
1 Citation (Scopus)

Design and Hardware Implementation of New Adaptive Fuzzy Logic-Based MPPT Control Method for Photovoltaic Applications

Rezk, H., Aly, M., Al-Dhaifallah, M. & Shoyama, M., Jan 1 2019, In : IEEE Access. 7, p. 106427-106438 12 p., 8786102.

Research output: Contribution to journalArticle

Open Access
Fuzzy logic
Hardware
Solar radiation
Digital signal processing
Maximum power point trackers

Design study of 10 mw rebco fully superconducting synchronous generator for electric aircraft

Komiya, M., Aikawa, T., Sasa, H., Miura, S., Iwakuma, M., Yoshida, T., Sasayama, T., Tomioka, A., Konno, M. & Izumi, T., Aug 1 2019, In : IEEE Transactions on Applied Superconductivity. 29, 5, 8675517.

Research output: Contribution to journalArticle

fly by wire control
Synchronous generators
radiant flux density
generators
Aircraft

Development of a novel noninvasive system for measurement and imaging of the arterial phase oxygen density ratio in the retinal microcirculation

Ishikawa, S., Yoshinaga, Y., Kantake, D., Nakamura, D., Yoshida, N., Hisatomi, T., Ikeda, Y., Ishibashi, T. & Enaida, H., Mar 4 2019, In : Graefe's Archive for Clinical and Experimental Ophthalmology. 257, 3, p. 557-565 9 p.

Research output: Contribution to journalArticle

Microcirculation
Oxygen
Breath Holding
Volunteers
Venules

Economic evaluation of 23 kV tri-axial HTS cable application to power system

Lee, C., Choi, J., Yang, H., Park, M. & Iwakuma, M., Aug 1 2019, In : IEEE Transactions on Applied Superconductivity. 29, 5, 8678485.

Research output: Contribution to journalArticle

Superconducting cables
cables
economics
Cables
Economics

Effect of viscosity on harmonics signals of magnetic nanoparticles for thermometry application

Elrefai, A. L., Yoshida, T. & Enpuku, K., Dec 1 2019, In : Journal of Magnetism and Magnetic Materials. 491, 165480.

Research output: Contribution to journalArticle

temperature measurement
Viscosity
viscosity
Nanoparticles
harmonics

Effect of viscosity on the AC magnetization of magnetic nanoparticles under different AC excitation fields

Yoshida, T., Nakamura, T., Higashi, O. & Enpuku, K., Feb 1 2019, In : Journal of Magnetism and Magnetic Materials. 471, p. 334-339 6 p.

Research output: Contribution to journalArticle

Magnetization
alternating current
Viscosity
viscosity
Nanoparticles
3 Citations (Scopus)

Effects of size and anisotropy of magnetic nanoparticles associated with dynamics of easy axis for magnetic particle imaging

Ota, S., Matsugi, Y., Nakamura, T., Takeda, R., Takemura, Y., Kato, I., Nohara, S., Sasayama, T., Yoshida, T. & Enpuku, K., Mar 15 2019, In : Journal of Magnetism and Magnetic Materials. 474, p. 311-318 8 p.

Research output: Contribution to journalArticle

Anisotropy
Nanoparticles
harmonics
Imaging techniques
nanoparticles

Electrical property measurement of two-dimensional hole-gas layer on hydrogen-terminated diamond surface in vacuum-gap-gate structure

Inaba, M., Kawarada, H. & Ohno, Y., Jun 24 2019, In : Applied Physics Letters. 114, 25, 253504.

Research output: Contribution to journalArticle

Open Access
diamonds
electrical properties
vacuum
hydrogen
gases

EMI prediction and reduction of zero-crossing noise in totem-pole bridgeless PFC converters

Zhang, B., Lin, Q., Imaoka, J., Shoyama, M., Tomioka, S. & Takegami, E., Jan 1 2019, In : Journal of Power Electronics. 19, 1, p. 278-287 10 p.

Research output: Contribution to journalArticle

Signal interference
Poles
Noise abatement
Electric potential

Empirical expression for harmonics of AC magnetization of magnetic nanoparticles with core size distribution

Du, Z., Sun, Y., Higashi, O., Enpuku, K. & Yoshida, T., Jan 1 2019, In : Japanese Journal of Applied Physics. 58, 9, 097003.

Research output: Contribution to journalArticle

Magnetization
alternating current
Nanoparticles
harmonics
nanoparticles
strands
Tapes
tapes
alternating current
coils

In-Field Transport Properties at Grain Boundaries in BaHfO3-doped SmBa2Cu3Oy Bicrystal Films at Low Temperatures

Tsuchiya, Y., Akita, J., Ichino, Y., Miura, S. & Yoshida, Y., Aug 1 2019, In : IEEE Transactions on Applied Superconductivity. 29, 5, 8662621.

Research output: Contribution to journalArticle

Bicrystals
bicrystals
Transport properties
Grain boundaries
grain boundaries
1 Citation (Scopus)

Influence of Ni, Ti and NiTi alloy nanoparticles on hydrothermally grown ZnO nanowires for photoluminescence enhancement

Patra, N., Karuturi, S. K., Vasa, N. J., Nakamura, D., Higashihata, M., Singh, V. & Palani, I. A., Jan 5 2019, In : Journal of Alloys and Compounds. 770, p. 1119-1129 11 p.

Research output: Contribution to journalArticle

Nanowires
Photoluminescence
Metals
Nanoparticles
Metal nanoparticles
1 Citation (Scopus)

Laser Assisted Doping of Silicon Carbide Thin Films Grown by Pulsed Laser Deposition

Paneerselvam, E., Lakshmi Narayanan, V. K., Vasa, N. J., Higashihata, M., Nakamura, D., Ikenoue, H. & Ramachandra Rao, M. S., Jun 15 2019, In : Journal of Electronic Materials. 48, 6, p. 3468-3478 11 p.

Research output: Contribution to journalArticle

Pulsed laser deposition
Silicon carbide
silicon carbides
pulsed laser deposition
Doping (additives)
7 Citations (Scopus)

Magnetic parameters evaluation of magnetic nanoparticles for use in biomedical applications

Elrefai, A. L., Yoshida, T. & Enpuku, K., Mar 15 2019, In : Journal of Magnetism and Magnetic Materials. 474, p. 522-527 6 p.

Research output: Contribution to journalArticle

Nanoparticles
nanoparticles
evaluation
Saturation magnetization
Magnetization
Pickups
Magnetometers
inductance
Inductance
magnetometers

Microfabrication of Au film using optical vortex beam

Kawagoe, S., Nakamura, R., Tasaki, R., Oshima, H., Higashihata, M., Nakamura, D. & Omatsu, T., Apr 1 2019, In : Journal of Laser Micro Nanoengineering. 14, 1, p. 31-34 4 p.

Research output: Contribution to journalArticle

Open Access
Optical films
Microfabrication
Vortex flow
vortices
Angular momentum
1 Citation (Scopus)

Modeling, magnetic design, simulation methods, and experimental evaluation of various powder cores used in power converters considering their dc superimposition characteristics

Imaoka, J., Okamoto, K., Shoyama, M., Ishikura, Y., Noah, M. & Yamamoto, M., Sep 1 2019, In : IEEE Transactions on Power Electronics. 34, 9, p. 9033-9051 19 p., 8571263.

Research output: Contribution to journalArticle

Power converters
Powders
Magnetic cores
Powder magnetic cores
Fluxes

Numerical analysis of current-limiting cooperation of a 20 mva superconducting transformer and cable

Nakamura, F., Iwakuma, M., Miura, S., Yoshida, K., Tomioka, A. & Konno, M., Aug 1 2019, In : IEEE Transactions on Applied Superconductivity. 29, 5, 8681412.

Research output: Contribution to journalArticle

transformers
cables
numerical analysis
Numerical analysis
Cables

Optimal design of wind energy system interconnected with utility grid-case study of Egypt

EL-Ajmi, S. I., Mohamed, Y. S., Shoyama, M. & Zaki Diab, A. A., Jan 1 2019, In : International Journal of Engineering Research and Technology. 12, 9, p. 1561-1566 6 p.

Research output: Contribution to journalArticle

Wind power
Computer program listings
Turbogenerators
Wind turbines
Coastal zones

Point-Arc Remote Plasma Chemical Vapor Deposition for High-Quality Single-Crystal Diamond Selective Growth

Fei, W., Inaba, M., Hoshino, H., Tsuyusaki, I., Kawai, S., Iwataki, M. & Kawarada, H., Nov 1 2019, In : Physica Status Solidi (A) Applications and Materials Science. 216, 21, 1900227.

Research output: Contribution to journalArticle

Diamond
Chemical vapor deposition
Diamonds
arcs
diamonds

Selective area laser-assisted doping of SiC thin films and blue light electroluminescence

Paneerselvam, E., Kikuchi, T., Ikenoue, H., Vasa, N. J., Palani, I. A., Higashihata, M., Nakamura, D. & Ramachandra Rao, M. S., Sep 12 2019, In : Journal of Physics D: Applied Physics. 52, 48, 48LT01.

Research output: Contribution to journalArticle

Electroluminescence
electroluminescence
p-n junctions
Doping (additives)
Thin films
1 Citation (Scopus)

Simple microfluidic device for detecting the negative dielectrophoresis of DNA labeled microbeads

Nakano, M., Ding, Z., Matsuda, K., Xu, J., Inaba, M. & Suehiro, J., Nov 1 2019, In : Biomicrofluidics. 13, 6, 064109.

Research output: Contribution to journalArticle

microfluidic devices
Electrophoresis
Microfluidics
DNA
deoxyribonucleic acid

Theoretical Investigation of Current-Sharing Properties of Three-Strand Parallel Conductors Composed of REBa 2 Cu 3 O y Superconducting Tapes

Sagawa, S., Miura, S., Iwakuma, M., Fukumoto, Y., Yoshida, K., Sato, S. & Izumi, T., Aug 1 2019, In : IEEE Transactions on Applied Superconductivity. 29, 5, 8629299.

Research output: Contribution to journalArticle

Superconducting tapes
strands
Tapes
tapes
conductors

Three-dimensional detection of magnetic nanoparticles using a field-free line with weak field gradient and multiple pickup coils

Hamanaga, S., Yoshida, T., Sasayama, T., Elrefai, A. L. & Enpuku, K., Jan 1 2019, In : Japanese Journal of Applied Physics. 58, 6, 061001.

Research output: Contribution to journalArticle

Open Access
Pickups
coils
Nanoparticles
gradients
nanoparticles

Wash-free detection of biomaterial utilizing magnetic markers and MR sensor

Irie, K., Akiyoshi, K., Yoshida, T. & Enpuku, K., Jan 25 2019, In : Research Reports on Information Science and Electrical Engineering of Kyushu University. 24, 1, p. 17-22 6 p.

Research output: Contribution to journalArticle

Biomaterials
Sensors
Proteins
Washing
Experiments
2018
7 Citations (Scopus)

A Current Sharing Method Utilizing Single Balancing Transformer for a Multiphase LLC Resonant Converter with Integrated Magnetics

Noah, M., Endo, S., Ishibashi, H., Nanamori, K., Imaoka, J., Umetani, K. & Yamamoto, M., Jun 1 2018, In : IEEE Journal of Emerging and Selected Topics in Power Electronics. 6, 2, p. 977-992 16 p.

Research output: Contribution to journalArticle

Stars
Magnetic circuits
Inductance
Transistors
Capacitors
7 Citations (Scopus)

A Magnetic Design Method Considering DC-Biased Magnetization for Integrated Magnetic Components Used in Multiphase Boost Converters

Imaoka, J., Okamoto, K., Kimura, S., Noah, M., Martinez, W., Yamamoto, M. & Shoyama, M., Apr 2018, In : IEEE Transactions on Power Electronics. 33, 4, p. 3346-3362 17 p., 7932878.

Research output: Contribution to journalArticle

Magnetization
Electric current control
Power converters
Switching frequency
Saturation magnetization
13 Citations (Scopus)

A New Single-Phase Five-Level Inverter Topology for Single and Multiple Switches Fault Tolerance

Aly, M., Ahmed, E. M. & Shoyama, M., Nov 1 2018, In : IEEE Transactions on Power Electronics. 33, 11, p. 9198-9208 11 p., 8253839.

Research output: Contribution to journalArticle

Fault tolerance
Switches
Topology
Short circuit currents
Industrial applications
3 Citations (Scopus)

Design Study of 2-MW Fully Superconducting Synchronous Motors

Fukuda, S., Yun, K., Iwakuma, M., Miura, S., Sato, S., Yoshida, K., Tomioka, A., Konno, M. & Izumi, T., Jun 2018, In : IEEE Transactions on Applied Superconductivity. 28, 4, 5207806.

Research output: Contribution to journalArticle

synchronous motors
Synchronous motors
tapes
Tapes
operating temperature
1 Citation (Scopus)

Difference of AC Losses Between Nonstriated and Striated Tape and Applicability of Temperature Scaling Law to Stacked Striated Tape

Ito, T., Iwakuma, M., Miura, S., Izumi, T., Adachi, K., Machi, T. & Ibi, A., Apr 2018, In : IEEE Transactions on Applied Superconductivity. 28, 3, 8246535.

Research output: Contribution to journalArticle

Scaling laws
scaling laws
Tapes
tapes
alternating current
5 Citations (Scopus)

Empirical expression for DC magnetization curve of immobilized magnetic nanoparticles for use in biomedical applications

Elrefai, A. L., Sasayama, T., Yoshida, T. & Enpuku, K., May 1 2018, In : AIP Advances. 8, 5, 056803.

Research output: Contribution to journalArticle

direct current
nanoparticles
magnetization
curves
simulation
4 Citations (Scopus)
2 Citations (Scopus)

High-speed observation of semiconductor microsphere generation by laser ablation in the air

Tasaki, R., Higashihata, M., Suwa, A., Ikenoue, H. & Nakamura, D., Feb 1 2018, In : Applied Physics A: Materials Science and Processing. 124, 2, 161.

Research output: Contribution to journalArticle

Laser ablation
Microspheres
zinc oxides
laser ablation
Zinc Oxide

Improved flux pinning for high-field applications in BaHfO3-Doped SmBa2Cu3 oy-coated conductors with high density of random pinning centers induced by BaHfO3 nanorods

Miura, S., Tsuchiya, Y., Yoshida, Y., Ichino, Y., Awaji, S., Ichinose, A., Matsumoto, K., Ibi, A., Izumi, T. & Iwakuma, M., Jun 1 2018, In : IEEE Transactions on Applied Superconductivity. 28, 4, 8000606.

Research output: Contribution to journalArticle

Flux pinning
flux pinning
Nanorods
nanorods
conductors
3 Citations (Scopus)

Influence of short pulse duration of carbon dioxide lasers on extreme ultraviolet emission from laser-produced plasmas

Amano, R., Dinh, T. H., Sasanuma, A., Arai, G., Hara, H., Fujii, Y., Hatano, T., Ejima, T., Jiang, W., Sunahara, A., Takahashi, A., Nakamura, D., Okada, T., Sakaue, K., Miura, T., O'Sullivan, G. & Higashiguchi, T., Jul 2018, In : Japanese Journal of Applied Physics. 57, 7, 070311.

Research output: Contribution to journalArticle

Carbon dioxide lasers
Semiconductor switches
Laser produced plasmas
carbon dioxide lasers
ultraviolet emission
11 Citations (Scopus)

Lagrangian dynamics model and practical implementation of an integrated transformer in multi-phase LLC resonant converter

Noah, M., Umetani, K., Imaoka, J. & Yamamoto, M., Feb 20 2018, In : IET Power Electronics. 11, 2, p. 339-347 9 p.

Research output: Contribution to journalArticle

Dynamic models
Topology
Magnetic cores
Power converters
Fluxes

Liquid-phase detection of biomaterial using magnetic markers

Takafuji, Y., Irie, K., Yoshida, T. & Enpuku, K., Jan 2018, In : Research Reports on Information Science and Electrical Engineering of Kyushu University. 23, 1, p. 1-7 7 p.

Research output: Contribution to journalArticle

Biomaterials
Proteins
SQUIDs
Liquids
Washing
1 Citation (Scopus)

Low-noise magnetometer based on inductance modulation in high-critical-temperature superconductor coil

Enpuku, K., Matsuo, M., Yoshida, Y., Yamashita, S., Sasayama, T. & Yoshida, T., Jun 2018, In : Japanese Journal of Applied Physics. 57, 6, 060314.

Research output: Contribution to journalArticle

Magnetometers
inductance
Inductance
low noise
magnetometers
3 Citations (Scopus)

Magnetic fractionation and characterization of magnetic nanoparticles for magnetic particle imaging

Yoshida, T., Nakamura, T., Higashi, O. & Enpuku, K., Aug 2018, In : Japanese Journal of Applied Physics. 57, 8, 080302.

Research output: Contribution to journalArticle

Fractionation
fractionation
Nanoparticles
Imaging techniques
nanoparticles

New design approach for grid-current-based active damping of LCL filter resonance in grid-connected converters

Gaafar, M. A., Dousoky, G. M., Ahmed, E. M., Shoyama, M. & Orabi, M., Jul 1 2018, In : Journal of Power Electronics. 18, 4, p. 1165-1177 13 p.

Research output: Contribution to journalArticle

High pass filters
Damping
Poles
2 Citations (Scopus)

Numerical Analyses on the Influences of Armature Winding Shape and Yoke Arrangements on Total Losses in Fully Superconducting Synchronous Motors Using REBCO Tapes

Kawagoe, A., Inoue, K., Higashi, Y., Iwakuma, M., Konno, M., Tomioka, A., Hase, Y. & Izumi, T., Jun 1 2018, In : IEEE Transactions on Applied Superconductivity. 28, 4, 8323168.

Research output: Contribution to journalArticle

synchronous motors
armatures
Synchronous motors
Tapes
tapes
2 Citations (Scopus)

Role of carboxyl and amine termination on a boron-doped diamond solution gate field effect transistor (SGFET) for PH sensing

Falina, S., Kawai, S., Oi, N., Yamano, H., Kageura, T., Suaebah, E., Inaba, M., Shintani, Y., Syamsul, M. & Kawarada, H., Jul 6 2018, In : Sensors (Switzerland). 18, 7, 2178.

Research output: Contribution to journalArticle

Open Access
Gates (transistor)
Diamond
Boron
Amines
Diamonds

Room temperature WGM resonances in the red spectral range from Ho3+ activated ZnO micro-spherical cavities

Fabitha, K., Nagasaki, F., Fujiwara, Y., Wakiyama, Y., Nakamura, D. & Ramachandra Rao, M. S., Jun 25 2018, In : Applied Physics Letters. 112, 26, 262102.

Research output: Contribution to journalArticle

whispering gallery modes
cavities
Q factors
room temperature
laser ablation
1 Citation (Scopus)

Sudden Short-Circuit Test of 22-kV YBCO Triaxial Superconducting Cable

Adachi, K., Shiohara, K., Sugane, H., Kitamura, T., Mido, N., Hasegawa, T., Konno, M. & Iwakuma, M., Jun 1 2018, In : IEEE Transactions on Applied Superconductivity. 28, 4, 5401104.

Research output: Contribution to journalArticle

Superconducting cables
short circuits
Short circuit currents
cables
Cables

Surface Diffusion Constants and Supersaturations in SmBCO Films Prepared by Pulsed Laser Deposition Method

Ichino, Y., Shimazaki, N., Miura, S., Tsuchiya, Y. & Yoshida, Y., Jun 2018, In : IEEE Transactions on Applied Superconductivity. 28, 4, 7500304.

Research output: Contribution to journalArticle

Surface diffusion
Supersaturation
Pulsed laser deposition
surface diffusion
supersaturation
2 Citations (Scopus)
Superconducting tapes
strands
tapes
alternating current
conductors