Research Output 1983 2020

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2018
1 Citation (Scopus)

Regularization and Interpolation of Positive Matrices

Yamamoto, K., Chen, Y., Ning, L., Georgiou, T. T. & Tannenbaum, A., Apr 2018, In : IEEE Transactions on Automatic Control. 63, 4, p. 1208-1212 5 p.

Research output: Contribution to journalArticle

Interpolation
Power spectrum
Spectrum analysis
Time series
Mass transfer
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 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
1 Citation (Scopus)

Three-dimensional imaging of magnetic nanoparticles using multiple pickup coils and field-free line

Muta, M., Hamanaga, S., Tanaka, N., Sasayama, T., Yoshida, T. & Enpuku, K., Feb 2018, In : Japanese Journal of Applied Physics. 57, 2, 023002.

Research output: Contribution to journalArticle

Pickups
coils
Nanoparticles
Imaging techniques
nanoparticles
6 Citations (Scopus)

Winding orientation method to minimise the secondary leakage of a gapped transformer utilised in LLC resonant converter

Noah, M., Umetani, K., Yamamoto, M. & Imaoka, J., Feb 8 2018, In : Electronics Letters. 54, 3, p. 157-159 3 p.

Research output: Contribution to journalArticle

Inductance

イギリス,アメリカ,そしてスウェーデンへ

Translated title of the contribution: My Journey of Research -- Cambridge, Minnesota and LundYamamoto, K., Nov 2018, システム/制御/情報, 62, 11, p. 466 471 p.

Research output: Contribution to specialist publicationArticle

Open Access
2017
5 Citations (Scopus)

AC Loss Properties of Stacked REBCO Superconducting Tapes

Ueno, T., Iwakuma, M., Ito, T., Yun, K., Adachi, K., Tomioka, A., Hase, Y., Konno, M., Izumi, T., Machi, T. & Ibi, A., Jun 2017, In : IEEE Transactions on Applied Superconductivity. 27, 4, 7833112.

Research output: Contribution to journalArticle

Superconducting tapes
tapes
alternating current
Tapes
curves
4 Citations (Scopus)

Allowable power analysis and comparison of high power density DC-DC converters with integrated magnetic components

Kimura, S., Kawakami, T., Nanamori, K., Imaoka, J. & Yamamoto, M., Jan 1 2017, In : IEEJ Journal of Industry Applications. 6, 6, p. 463-472 10 p.

Research output: Contribution to journalArticle

DC-DC converters
Electric network topology
Saturation magnetization

An AC MPPT with Active/Reactive Power Control Feature for Single-Stage Three-Phase Grid-Connected Photovoltaic VSIs

Dousoky, G. M. & Shoyama, M., Feb 25 2017, In : Electric Power Components and Systems. 45, 4, p. 442-450 9 p.

Research output: Contribution to journalArticle

Reactive power
Power control
Controllers
Electric potential
Digital signal processors
12 Citations (Scopus)

Approaches in controllable generation of artificial pinning center in REBa2Cu3Oy-coated conductor for high-flux pinning

Yoshida, Y., Miura, S., Tsuchiya, Y., Ichino, Y., Awaji, S., Matsumoto, K. & Ichinose, A., Aug 30 2017, In : Superconductor Science and Technology. 30, 10, 104002.

Research output: Contribution to journalArticle

Flux pinning
flux pinning
Growth temperature
Nanorods
conductors

A Renewed Look at Zeros of Sampled-Data Systems—From the Lifting Viewpoint

Yamamoto, K., Yamamoto, Y. & Niculescu, S. I., Jul 2017, In : IFAC-PapersOnLine. 50, 1, p. 3668-3673 6 p.

Research output: Contribution to journalArticle

Sampling
4 Citations (Scopus)

Bacterial detection based on polymerase chain reaction and microbead dielectrophoresis characteristics

Ding, Z., Kasahara, H., Nakano, M. & Suehiro, J., Aug 1 2017, In : IET Nanobiotechnology. 11, 5, p. 562-567 6 p.

Research output: Contribution to journalArticle

Polymerase chain reaction
Electrophoresis
Microspheres
Bacteria
DNA
3 Citations (Scopus)

C-axis correlated pinning mechanism in vortex liquid and solid phases for Sm123 film with well-aligned BaHfO3 nanorods

Awaji, S., Tsuchiya, Y., Miura, S., Ichino, Y., Yoshida, Y. & Matsumoto, K., Oct 20 2017, In : Superconductor Science and Technology. 30, 11, 114005.

Research output: Contribution to journalArticle

Nanorods
nanorods
solid phases
liquid phases
Vortex flow
4 Citations (Scopus)

Characterization of Multifilamentary REBCO Coated Conductor Coil Fabricated by Using the Process of Scratching the IBAD-MgO Layer

Fujita, S., Muto, S., Kurihara, C., Sato, H., Hirata, W., Nakamura, N., Igarashi, M., Hanyu, S., Daibo, M., Iijima, Y., Naoe, K., Iwakuma, M. & Kiss, T., Jun 2017, In : IEEE Transactions on Applied Superconductivity. 27, 4, 7752821.

Research output: Contribution to journalArticle

Ion beam assisted deposition
Screening
coils
conductors
screening
17 Citations (Scopus)

Charge state stabilization of shallow nitrogen vacancy centers in diamond by oxygen surface modification

Yamano, H., Kawai, S., Kato, K., Kageura, T., Inaba, M., Okada, T., Higashimata, I., Haruyama, M., Tanii, T., Yamada, K., Onoda, S., Kada, W., Hanaizumi, O., Teraji, T., Isoya, J. & Kawarada, H., Apr 2017, In : Japanese Journal of Applied Physics. 56, 4, 04CK08.

Research output: Contribution to journalArticle

Vacancies
Surface treatment
Diamonds
Stabilization
stabilization
5 Citations (Scopus)
Polymerase chain reaction
Electrophoresis
Microspheres
Real-Time Polymerase Chain Reaction
DNA
3 Citations (Scopus)

Current-Sharing Properties in Parallel Conductors Composed of REBCO Superconducting Tapes

Honda, S., Iwakuma, M., Fukumoto, Y., Yoshida, K., Sato, S., Izumi, T., Tomioka, A. & Konno, M., Jun 2017, In : IEEE Transactions on Applied Superconductivity. 27, 4, 7857771.

Research output: Contribution to journalArticle

Superconducting tapes
Tapes
tapes
conductors
Magnets
2 Citations (Scopus)
electrification
rectifiers
transformers
Tapes
Superconducting cables
4 Citations (Scopus)

Developing new lifetime prolongation SVM algorithm for multilevel inverters with thermally aged power devices

Aly, M., Ahmed, E. M. & Shoyama, M., Dec 15 2017, In : IET Power Electronics. 10, 15, p. 2248-2256 9 p.

Research output: Contribution to journalArticle

Vector spaces
Modulation
Electric potential
Capacitors
Heat problems
4 Citations (Scopus)

Development of 22 kV HTS Triaxial Superconducting Bus

Adachi, K., Sugane, H., Wang, T., Ohnishi, H., Sano, S., Shiohara, K., Kitamura, T., Mido, N., Koizumi, T., Hasegawa, T., Konno, M. & Iwakuma, M., Jun 2017, In : IEEE Transactions on Applied Superconductivity. 27, 4, 7855711.

Research output: Contribution to journalArticle

cables
Cables
insulation
Thermal insulation
Electric potential
23 Citations (Scopus)

Durability-enhanced two-dimensional hole gas of C-H diamond surface for complementary power inverter applications

Kawarada, H., Yamada, T., Xu, D., Tsuboi, H., Kitabayashi, Y., Matsumura, D., Shibata, M., Kudo, T., Inaba, M. & Hiraiwa, A., Feb 20 2017, In : Scientific reports. 7, 42368.

Research output: Contribution to journalArticle

Open Access
durability
field effect transistors
diamonds
gases
high voltages
16 Citations (Scopus)

Effect of alignment of easy axes on dynamic magnetization of immobilized magnetic nanoparticles

Yoshida, T., Matsugi, Y., Tsujimura, N., Sasayama, T., Enpuku, K., Viereck, T., Schilling, M. & Ludwig, F., Apr 1 2017, In : Journal of Magnetism and Magnetic Materials. 427, p. 162-167 6 p.

Research output: Contribution to journalArticle

Magnetization
alignment
Nanoparticles
nanoparticles
magnetization
11 Citations (Scopus)

Effect of a radical exposure nitridation surface on the charge stability of shallow nitrogen-vacancy centers in diamond

Kageura, T., Kato, K., Yamano, H., Suaebah, E., Kajiya, M., Kawai, S., Inaba, M., Tanii, T., Haruyama, M., Yamada, K., Onoda, S., Kada, W., Hanaizumi, O., Teraji, T., Isoya, J., Kono, S. & Kawarada, H., May 2017, In : Applied Physics Express. 10, 5, 055503.

Research output: Contribution to journalArticle

Open Access
Nitridation
Vacancies
Diamonds
diamonds
Nitrogen
1 Citation (Scopus)

Effect of Nanorod Alignment on Flux Pinning State in BaHfO3 Doped SmBa2Cu3 Oy Films

Tsuchiya, Y., Miura, S., Xu, Q., Ichino, Y., Yoshida, Y., Awaji, S. & Watanabe, K., Jun 2017, In : IEEE Transactions on Applied Superconductivity. 27, 4, 7802618.

Research output: Contribution to journalArticle

Flux pinning
flux pinning
Nanorods
nanorods
alignment
Snow
Water content
Insulation
Liquids
Dielectric properties
9 Citations (Scopus)

Flux pinning landscape up to 25 T in SmBa2Cu3Oy films with BaHfO3 nanorods fabricated by low-temperature growth technique

Tsuchiya, Y., Miura, S., Awaji, S., Ichino, Y., Matsumoto, K., Izumi, T., Watanabe, K. & Yoshida, Y., Sep 4 2017, In : Superconductor Science and Technology. 30, 10, 104004.

Research output: Contribution to journalArticle

Flux pinning
flux pinning
Growth temperature
Nanorods
nanorods
2 Citations (Scopus)
Magnetic cores
Magnetization
Nanoparticles
Magnetic relaxation
Magnetic relaxation measurement
3 Citations (Scopus)

Magnetometer exploiting inductance modulation in coils made of high-critical-temperature superconductor

Enpuku, K., Matsuo, M., Sasayama, T. & Yoshida, T., Nov 2017, In : Applied Physics Express. 10, 11, 113101.

Research output: Contribution to journalArticle

Magnetometers
inductance
Inductance
magnetometers
Superconducting materials
6 Citations (Scopus)

New parameter for current-sensorless MPPT in grid-connected photovoltaic VSIs

Dousoky, G. M. & Shoyama, M., Jan 1 2017, In : Solar Energy. 143, p. 113-119 7 p.

Research output: Contribution to journalArticle

Electric potential
Sensors
Digital signal processors
Costs
Maximum power point trackers
34 Citations (Scopus)

Normally-Off C-H Diamond MOSFETs with Partial C-O Channel Achieving 2-kV Breakdown Voltage

Kitabayashi, Y., Kudo, T., Tsuboi, H., Yamada, T., Xu, D., Shibata, M., Matsumura, D., Hayashi, Y., Syamsul, M., Inaba, M., Hiraiwa, A. & Kawarada, H., Mar 2017, In : IEEE Electron Device Letters. 38, 3, p. 363-366 4 p., 7837668.

Research output: Contribution to journalArticle

Diamond
MOSFET devices
Electric breakdown
Diamonds
Hydrogen
1 Citation (Scopus)
Nanoparticles
harmonics
nanoparticles
Hysteresis loops
Magnetic moments
3 Citations (Scopus)

Scribing Effect on Shielding Current in REBCO Superconducting Coils

Iwakuma, M., Nabekura, K., Yun, K., Yoshida, K., Sato, S., Tomioka, A., Konno, M., Ibi, A., Machi, T. & Izumi, T., Jun 2017, In : IEEE Transactions on Applied Superconductivity. 27, 4, 7792135.

Research output: Contribution to journalArticle

scoring
Shielding
tapes
shielding
coils
2 Citations (Scopus)

Sheet resistance underneath the Au ohmic-electrode on hydrogen-terminated surface-conductive diamond (001)

Kono, S., Sasaki, T., Inaba, M., Hiraiwa, A. & Kawarada, H., Nov 2017, In : Diamond and Related Materials. 80, p. 93-98 6 p.

Research output: Contribution to journalArticle

Diamond
Sheet resistance
Hydrogen
Diamonds
Electrodes
4 Citations (Scopus)

Strongly enhanced irreversibility field and flux pinning force density in SmBa2Cu3Oy-coated conductors with well-aligned BaHfO3 nanorods

Miura, S., Yoshida, Y., Tsuchiya, Y., Ichino, Y., Awaji, S., Ichinose, A., Matsumoto, K., Ibi, A., Izumi, T. & Iwakuma, M., Oct 2017, In : Applied Physics Express. 10, 10, 103101.

Research output: Contribution to journalArticle

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

Thermal and reliability assessment for wind energy systems with DSTATCOM functionality in resilient microgrids

Aly, M., Ahmed, E. M. & Shoyama, M., Jan 1 2017, In : IEEE Transactions on Sustainable Energy. 8, 3, p. 953-965 13 p.

Research output: Contribution to journalArticle

Energy conversion
Wind power
Power electronics
Reactive power
Thermal stress
13 Citations (Scopus)

Thermal stresses relief carrier-based PWM strategy for single-phase multilevel inverters

Aly, M., Ahmed, E. M. & Shoyama, M., Dec 2017, In : IEEE Transactions on Power Electronics. 32, 12, p. 9376-9388 13 p., 7820206.

Research output: Contribution to journalArticle

Stress relief
Thermal stress
Pulse width modulation
Switches
Semiconductor switches
7 Citations (Scopus)

Three-dimensional magnetic nanoparticle imaging using small field gradient and multiple pickup coils

Sasayama, T., Tsujita, Y., Morishita, M., Muta, M., Yoshida, T. & Enpuku, K., Apr 1 2017, In : Journal of Magnetism and Magnetic Materials. 427, p. 144-150 7 p.

Research output: Contribution to journalArticle

Pickups
coils
Nanoparticles
Imaging techniques
gradients
11 Citations (Scopus)
Vapor phase epitaxy
Nanorods
vapor phase epitaxy
nanorods
Thin films
3 Citations (Scopus)

Threshold voltage control of electrolyte solution gate field-effect transistor by electrochemical oxidation

Naramura, T., Inaba, M., Mizuno, S., Igarashi, K., Kida, E., Mohd Sukri, S. F., Shintani, Y. & Kawarada, H., Jul 3 2017, In : Applied Physics Letters. 111, 1, 013505.

Research output: Contribution to journalArticle

electrochemical oxidation
threshold voltage
field effect transistors
diamonds
electrolytes
2 Citations (Scopus)
Microelectrodes
Light emission
electrical faults
Electrodes
Cathodes
11 Citations (Scopus)

Total volume evaluation of high-power density non-isolated DC-DC converters with integrated magnetics for electric vehicles

Martinez, W., Cortes, C., Yamamoto, M., Imaoka, J. & Umetani, K., Nov 17 2017, In : IET Power Electronics. 10, 14, p. 2010-2020 11 p.

Research output: Contribution to journalArticle

DC-DC converters
Electric vehicles
Magnetic couplings
Power converters
Capacitors
27 Citations (Scopus)

Unraveling viscosity effects on the hysteresis losses of magnetic nanocubes

Cabrera, D., Lak, A., Yoshida, T., Materia, M. E., Ortega, D., Ludwig, F., Guardia, P., Sathya, A., Pellegrino, T. & Teran, F. J., Apr 28 2017, In : Nanoscale. 9, 16, p. 5094-5101 8 p.

Research output: Contribution to journalArticle

Hysteresis
Viscosity
Nanoparticles
Hysteresis loops
Colloids
4 Citations (Scopus)

Utilization of surface plasmon resonance of Au/Pt nanoparticles for highly photosensitive ZnO nanorods network based plasmon field effect transistor

Kumar, A., Dixit, T., Palani, I. A., Nakamura, D., Higashihata, M. & Singh, V., Sep 2017, In : Physica E: Low-Dimensional Systems and Nanostructures. 93, p. 97-104 8 p.

Research output: Contribution to journalArticle

Surface plasmon resonance
Field effect transistors
Nanorods
surface plasmon resonance
nanorods
3 Citations (Scopus)

Vertical edge graphite layer on recovered diamond (001) after high-dose ion implantation and high-temperature annealing

Inaba, M., Seki, A., Sato, K., Kushida, T., Kageura, T., Yamano, H., Hiraiwa, A. & Kawarada, H., Sep 2017, In : Physica Status Solidi (B) Basic Research. 254, 9, 1700040.

Research output: Contribution to journalArticle

Diamond
Graphite
Ion implantation
ion implantation
Diamonds
1 Citation (Scopus)

Vortex Pinning Properties at Grain Boundary in SmBa2Cu3Oy Superconducting Films with BaHfO3 Nanorods Controlled via Low-Temperature Growth

Miura, S., Ichino, Y., Yoshida, Y., Ichinose, A. & Tsuruta, A., Jun 2017, In : IEEE Transactions on Applied Superconductivity. 27, 4, 7781616.

Research output: Contribution to journalArticle

Superconducting films
Growth temperature
superconducting films
Nanorods
nanorods
2016

An Investigation of Size-Reduction Effects in High Power Density Boost Converters with a Magnetic Coupling

Aoto, S., Kimura, S., Imaoka, J. & Yamamoto, M., Oct 1 2016, In : Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi). 197, 1, p. 35-45 11 p.

Research output: Contribution to journalArticle

Magnetic couplings
Networks (circuits)
Capacitors
Hybrid vehicles
Electric vehicles