Research Output 1983 2020

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2015

Synthesis of spherical ZnO microcrystals by laser ablation in air

Nakamura, D., Tanaka, T., Ikebuchi, T., Ueyama, T., Higashihata, M. & Okada, T., Jan 1 2015, In : IEEJ Transactions on Electronics, Information and Systems. 135, 9, p. 1085-1089 5 p.

Research output: Contribution to journalArticle

Microcrystals
Laser ablation
Microspheres
Air
Whispering gallery modes
9 Citations (Scopus)

Ultraviolet lasing action in aligned ZnO nanowall

Harada, K., Nakao, S., Takahashi, M., Higashihata, M., Ikenoue, H., Nakamura, D., Nakata, Y. & Okada, T., Jun 28 2015, In : Applied Physics B: Lasers and Optics. 119, 3, p. 469-473 5 p.

Research output: Contribution to journalArticle

lasing
radiant flux density
buffers
thresholds
regularity

高電力密度昇圧コンバータにおける最大許容電力と小型化性能

Translated title of the contribution: Maximum Allowable Power and Downsizing Performance in High Power Density Boost Converters木村翔太, 今岡淳 & 山本真義, Mar 31 2015, In : パワーエレクトロニクス学会誌. 40, 0, p. 84-92 9 p.

Research output: Contribution to journalArticle

Plug-in hybrid vehicles
Coupled circuits
Networks (circuits)
DC-DC converters
Magnetic flux
2014
1 Citation (Scopus)

Active damping for grid-connected LCL filter based on optimum P+R controller design using injected grid current feedback only

Gaafar, M. A. & Shoyama, M., 2014, In : Unknown Journal. 2014-January, January, 6972162.

Research output: Contribution to journalArticle

damping
Capacitors
Damping
filter
Feedback
18 Citations (Scopus)

A novel integrated magnetic core structure suitable for transformer-linked interleaved boost chopper circuit

Imaoka, J., Kimura, S., Martinez, W. & Yamamoto, M., Jan 1 2014, In : IEEJ Journal of Industry Applications. 3, 5, p. 395-404 10 p.

Research output: Contribution to journalArticle

Magnetic cores
Magnetic structure
Networks (circuits)
Magnetic circuits
Inductance
5 Citations (Scopus)

Controlling ZnO nanowire surface density during its growth by altering morphological properties of a ZnO buffer layer by UV laser irradiation

Shimogaki, T., Kawahara, H., Nakao, S., Higashihata, M., Ikenoue, H., Nakata, Y., Nakamura, D. & Okada, T., Jan 1 2014, In : Applied Physics A: Materials Science and Processing. 118, 4, p. 1239-1246 8 p.

Research output: Contribution to journalArticle

Zinc Oxide
Laser beam effects
Buffer layers
Zinc oxide
ultraviolet lasers

Development of YBCO power transformer

Hayashi, H. & Iwakuma, M., Jan 1 2014, In : Journal of the Institute of Electrical Engineers of Japan. 134, 8, p. 553-555 3 p.

Research output: Contribution to journalArticle

Power transformers
3 Citations (Scopus)

Effect of laser annealing using high repetition rate pulsed laser on optical properties of phosphorus-ion-implanted ZnO nanorods

Shimogaki, T., Ofuji, T., Tetsuyama, N., Okazaki, K., Higashihata, M., Nakamura, D., Ikenoue, H., Asano, T. & Okada, T., Feb 1 2014, In : Applied Physics A: Materials Science and Processing. 114, 2, p. 625-629 5 p.

Research output: Contribution to journalArticle

laser annealing
Nanorods
Pulsed lasers
Phosphorus
nanorods
2 Citations (Scopus)

Fabrication and characterization of spherical micro semiconductor crystals by laser ablation method

Shimogaki, T., Okazaki, K., Yamasaki, K., Fusazaki, K., Mizokami, Y., Tetsuyama, N., Higashihata, M., Ikenoue, H., Nakamura, D. & Okada, T., Jun 1 2014, In : Applied Physics A: Materials Science and Processing. 117, 1, p. 269-273 5 p.

Research output: Contribution to journalArticle

Zinc Oxide
Laser ablation
Zinc oxide
Microspheres
zinc oxides
6 Citations (Scopus)

Formation of one-dimensional ZnO nanowires from screw-dislocation-driven two-dimensional hexagonal stacking on diamond substrate using nanoparticle-assisted pulsed laser deposition

Senthil Kumar, E., Chandran, M., Bellarmine, F., Mannam, R., Nakamura, D., Higashihata, M., Okada, T. & Ramachandra Rao, M. S., Jan 22 2014, In : Journal Physics D: Applied Physics. 47, 3, 034016.

Research output: Contribution to journalArticle

Screw dislocations
Diamond
screw dislocations
Pulsed laser deposition
Nanowires

Harmonic signal analysis for magnetic nanoparticle imaging

Othman, N. B., Tsubaki, T., Kitahara, D., Yoshida, T. & Enpuku, K., Jan 1 2014, In : Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy. 61, SUPLL.1, p. S133-S136

Research output: Contribution to journalArticle

Signal analysis
Nanoparticles
Imaging techniques
Magnetic moments
Anisotropy
12 Citations (Scopus)

Highly sensitive liquid-phase detection of biological targets with magnetic markers and high Tc SQUID

Uchida, S., Higuchi, Y., Ueoka, Y., Yoshida, T., Enpuku, K., Adachi, S., Tanabe, K., Tsukamoto, A. & Kandori, A., Jan 1 2014, In : IEEE Transactions on Applied Superconductivity. 24, 4, 6766191.

Research output: Contribution to journalArticle

SQUIDs
markers
biotin
liquid phases
Biotin
11 Citations (Scopus)

Highly sensitive magnetic nanoparticle imaging using cooled-Cu/HTS- superconductor pickup coils

Morishige, T., Mihaya, T., Bai, S., Miyazaki, T., Yoshida, T., Matsuo, M. & Enpuku, K., Aug 2014, In : IEEE Transactions on Applied Superconductivity. 24, 4, 6766251.

Research output: Contribution to journalArticle

Pickups
Superconducting materials
coils
Nanoparticles
Imaging techniques
1 Citation (Scopus)

Improvement of junction properties of ZnO nanorod/GaN heterojunction using selective laser processing

Nakamura, D., Tetsuyama, N., Shimogaki, T., Higashihata, M. & Okada, T., Jan 1 2014, In : Journal of Laser Micro Nanoengineering. 9, 3, p. 209-212 4 p.

Research output: Contribution to journalArticle

Laser beam effects
Nanorods
nanorods
Heterojunctions
heterojunctions
1 Citation (Scopus)

Liquid-Phase detection of biological targets using magnetoresistive sensor and magnetic markers

Enpuku, K., Sakakibara, T. & Yoshida, T., Nov 1 2014, In : IEEE Transactions on Magnetics. 50, 11, 6971373.

Research output: Contribution to journalArticle

Biotin
Sensors
Liquids
Streptavidin
Polystyrenes
16 Citations (Scopus)

Liquid-phase immunoassay utilizing binding reactions between magnetic markers and targets in the presence of a magnetic field

Enpuku, K., Ueoka, Y., Sakakibara, T., Ura, M., Yoshida, T., Mizoguchi, T. & Kandori, A., Sep 1 2014, In : Applied Physics Express. 7, 9, 97001.

Research output: Contribution to journalArticle

immunoassay
Magnetic moments
markers
liquid phases
Magnetic fields
1 Citation (Scopus)

Magnetic particle imaging system utilizing orthogonal gradient field and harmonic signal detection

Bai, S., Kitahara, D., Hirokawa, A., Yoshida, T. & Enpuku, K., Jan 2014, In : Research Reports on Information Science and Electrical Engineering of Kyushu University. 19, 1, p. 7-12 6 p.

Research output: Contribution to journalArticle

Signal detection
Imaging systems
Magnetic fields
Magnetization
Nanoparticles
3 Citations (Scopus)

Magnetic particle imaging utilizing orthogonal gradient field and third-harmonic signal detection

Bai, S., Hirokawa, A., Tanabe, K., Yoshida, T. & Enpuku, K., Nov 1 2014, In : IEEE Transactions on Magnetics. 50, 11, 6971254.

Research output: Contribution to journalArticle

Signal detection
Nanoparticles
Imaging techniques
Singular value decomposition
Pickups
Noise abatement
Power electronics
Networks (circuits)

Parasitic Resistance Analysis in a Novel High Step-Up Interleaved Converter for Hybrid Electric Vehicles

Translated title of the contribution: Parasitic Resistance Analysis in a Novel High Step-Up Interleaved Converter for Hybrid Electric VehiclesMartinez, W., Imaoka, J., Yamamoto, M. & Umetani, K., Mar 31 2014, In : パワーエレクトロニクス学会誌. 40, 0, p. 93-104 12 p.

Research output: Contribution to journalArticle

Hybrid vehicles
Electric potential
Networks (circuits)
9 Citations (Scopus)

Patterned growth of ZnO nanowalls by nanoparticle-assisted pulsed laser deposition

Nakamura, D., Shimogaki, T., Nakao, S., Harada, K., Muraoka, Y., Ikenoue, H. & Okada, T., Jan 22 2014, In : Journal of Physics D: Applied Physics. 47, 3, 034014.

Research output: Contribution to journalArticle

Buffer layers
Pulsed laser deposition
pulsed laser deposition
buffers
Nanoparticles
1 Citation (Scopus)

Position-controlled and catalyst-free growth of ZnO nanocrystals by nanoparticle-assisted pulsed laser deposition

Nakao, S., Muraoka, Y., Higashihata, M., Nakamura, D., Nakata, Y. & Okada, T., Jun 1 2014, In : Applied Physics A: Materials Science and Processing. 117, 1, p. 63-67 5 p.

Research output: Contribution to journalArticle

Buffer layers
Pulsed laser deposition
Nanocrystals
pulsed laser deposition
nanocrystals
11 Citations (Scopus)

Rapid microbead-based DNA detection using dielectrophoresis and impedance measurement

Nakano, M., Ding, Z., Kasahara, H. & Suehiro, J., Oct 1 2014, In : EPL. 108, 2, 28003.

Research output: Contribution to journalArticle

impedance measurement
deoxyribonucleic acid
polymerase chain reaction
viruses
infectious diseases
8 Citations (Scopus)
narrowband
Nanoparticles
harmonics
Imaging techniques
nanoparticles
7 Citations (Scopus)

Ultraviolet electroluminescence from hetero p-n junction between a single ZnO microsphere and p-GaN thin film

Tetsuyama, N., Fusazaki, K., Mizokami, Y., Shimogaki, T., Higashihata, M., Nakamura, D. & Okada, T., Apr 21 2014, In : Optics Express. 22, 8, p. 10026-10031 6 p.

Research output: Contribution to journalArticle

p-n junctions
electroluminescence
whispering gallery modes
optical pumping
thin films
5 Citations (Scopus)

Understanding the discharge activity across GFRP material due to salt deposit under transient voltages by adopting OES and LIBS technique

Kumar, V. S., Vasa, N. J., Sarathi, R., Nakamura, D. & Okada, T., Oct 1 2014, In : IEEE Transactions on Dielectrics and Electrical Insulation. 21, 5, p. 2283-2292 10 p., 6927358.

Research output: Contribution to journalArticle

Salt deposits
Laser induced breakdown spectroscopy
Glass fiber reinforced plastics
Electric potential
Flashover

結合インダクタを用いた車載用昇圧チョッパ回路の特性解析と設計

Translated title of the contribution: Characteristic Analysis and Design of Boost Chopper Circuit using Coupled Inductor for Electric Vehicle今岡淳, 山本真義 & 川島崇宏, Mar 31 2014, In : パワーエレクトロニクス学会誌. 39, 0, p. 55-64 10 p.

Research output: Contribution to journalArticle

Coupled circuits
Electric vehicles
Networks (circuits)
Capacitors
Fluxes
2013
21 Citations (Scopus)

Analysis of output capacitor voltage ripple in multi-phase transformer-linked boost chopper circuit

Imaoka, J., Yamamoto, M., Nakamura, Y. & Kawashima, T., Jan 1 2013, In : IEEJ Journal of Industry Applications. 2, 5, p. 252-260 9 p.

Research output: Contribution to journalArticle

Capacitors
Networks (circuits)
Electric potential
Power converters
Cooling systems
43 Citations (Scopus)

A rapid bacteria detection technique utilizing impedance measurement combined with positive and negative dielectrophoresis

Hamada, R., Takayama, H., Shonishi, Y., Mao, L., Nakano, M. & Suehiro, J., Mar 25 2013, In : Sensors and Actuators, B: Chemical. 181, p. 439-445 7 p.

Research output: Contribution to journalArticle

Microelectrodes
impedance measurement
Electrophoresis
bacteria
Bacteria
29 Citations (Scopus)

Characteristics of extreme ultraviolet emission from mid-infrared laser-produced rare-earth Gd plasma

Higashiguchi, T., Li, B., Suzuki, Y., Kawasaki, M., Ohashi, H., Torii, S., Nakamura, D., Takahashi, A., Okada, T., Jiang, W., Miura, T., Endo, A., Dunne, P., O'Sullivan, G. & Makimura, T., Dec 30 2013, In : Optics Express. 21, 26, p. 31837-31845 9 p.

Research output: Contribution to journalArticle

ultraviolet emission
laser plasmas
infrared lasers
rare earth elements
energy conversion efficiency
46 Citations (Scopus)

Characterization of magnetically fractionated magnetic nanoparticles for magnetic particle imaging

Yoshida, T., Othman, N. B. & Enpuku, K., Nov 7 2013, In : Journal of Applied Physics. 114, 17, 173908.

Research output: Contribution to journalArticle

harmonics
nanoparticles
simulation
magnetic properties
anisotropy
10 Citations (Scopus)

Characterization of magnetic markers for liquid-phase detection of biological targets

Higuchi, Y., Uchida, S., Bhuiya, A. K., Yoshida, T. & Enpuku, K., Aug 5 2013, In : IEEE Transactions on Magnetics. 49, 7, p. 3456-3459 4 p., 6558894.

Research output: Contribution to journalArticle

Relaxation time
Liquids
Magnetic moments
Magnetization
Agglomeration

DC-AC current source converter using coupled inductor

Yamanaka, K., Hara, H., Ishii, S., Kume, T. & Shoyama, M., Nov 11 2013, In : IEEJ Transactions on Industry Applications. 133, 10, p. 978-985 8 p.

Research output: Contribution to journalArticle

Networks (circuits)
Switches
Matrix converters

Development of an anti-norovirus single-chain Fv for immunochromatographic test kit.

Nakano, M., Murofushi, K., Watabe, S. & Ohta, T., 2013, In : Unknown Journal. 23, 2, p. 69-73 5 p.

Research output: Contribution to journalArticle

Norovirus
Single-Chain Antibodies
Genotype
Capsid Proteins
Bacteriophages
11 Citations (Scopus)

Development of REBCO superconducting transformers with a current limiting function

Iwakuma, M., Katanosaka, Y., Sato, S., Hayashi, H., Okamoto, H., Gosho, Y., Tomioka, A., Konno, M., Iijima, Y., Saitoh, T., Ohkuma, T., Tagomori, A., Izumi, T. & Shiohara, Y., Jan 21 2013, In : IEEE Transactions on Applied Superconductivity. 23, 3, 6376116.

Research output: Contribution to journalArticle

transformers
Short circuit currents
short circuit currents
tapes
Critical currents
2 Citations (Scopus)

Effect of laser annealing on optical properties of ion-implanted ZnO nanorods

Shimogaki, T., Higashihata, M., Nakamura, D., Asano, T. & Okada, T., Jan 1 2013, In : Journal of Laser Micro Nanoengineering. 8, 1, p. 75-78 4 p.

Research output: Contribution to journalArticle

laser annealing
Nanorods
nanorods
Optical properties
Annealing

Evaluation of harmonic signals from magnetic nanoparticles and application to magnetic nanoparticle imaging

Yoshida, T., Othman, N. B., Tsubaki, T. & Enpuku, K., Jul 12 2013, In : IEEJ Transactions on Fundamentals and Materials. 133, 6

Research output: Contribution to journalArticle

Nanoparticles
Imaging techniques
Pickups
Medical applications
Singular value decomposition

Fabrication and luminescent properties of ZnO nanowire/GaN heterojunction LEDs

Nakamura, D., Ishida, Y., Tetsuyama, N., Higashihata, M. & Okada, T., Dec 1 2013, In : Journal of the Illuminating Engineering Institute of Japan (Shomei Gakkai Shi). 97, 11, p. 715-720 6 p.

Research output: Contribution to journalArticle

Nanowires
Light emitting diodes
Heterojunctions
Fabrication
Electroluminescence
1 Citation (Scopus)

Growth control of Zno nano-crystals by multi-beam interference patterning

Nakamura, D., Simogaki, T., Okazaki, K., Higashihata, M. & Okada, T., Dec 1 2013, In : Journal of Laser Micro Nanoengineering. 8, 3, p. 206-209 4 p.

Research output: Contribution to journalArticle

Nanowires
nanowires
Buffer layers
interference
Crystals
1 Citation (Scopus)
Sensors
Liquids
Magnetic fields
Signal detection
Modulation
9 Citations (Scopus)

Magnetic nanoparticle imaging using cooled pickup coil and harmonic signal detection

Enpuku, K., Morishige, T., Mihaya, T., Miyazai, T., Matsuo, M., Haku, S. & Yoshida, T., Aug 1 2013, In : Japanese journal of applied physics. 52, 8, 087001.

Research output: Contribution to journalArticle

signal detection
Pickups
Signal detection
coils
Nanoparticles
Networks (circuits)
Switches
Matrix converters
13 Citations (Scopus)

Synthesis of various sized ZnO microspheres by laser ablation and their lasing characteristics

Nakamura, D., Simogaki, T., Okazaki, K., Higashihata, M., Ikenoue, H. & Okada, T., Dec 1 2013, In : Journal of Laser Micro Nanoengineering. 8, 3, p. 296-299 4 p.

Research output: Contribution to journalArticle

Laser ablation
Microspheres
laser ablation
Whispering gallery modes
lasing
7 Citations (Scopus)

The short-circuit test results of 6.9 kV/2.3 kV 400 kVA-class YBCO model transformer with fault current limiting function

Tomioka, A., Bohno, T., Kakami, S., Isozaki, M., Watanabe, K., Toyama, K., Sugiyama, S., Konno, M., Gosho, Y., Okamoto, H., Hayashi, H., Tsutsumi, T., Iwakuma, M., Saito, T., Tanabe, K. & Shiohara, Y., Jan 15 2013, In : Physica C: Superconductivity and its applications. 484, p. 239-241 3 p.

Research output: Contribution to journalArticle

Electric fault currents
short circuits
transformers
Short circuit currents
Power transformers

Transport ac loss properties of a Bi-2223 superconducting coil from 0.1 Hz to 10 Hz

Funaki, K., Kurawaki, M., Sato, S., Kajikawa, K., Iwakuma, M., Hayashi, T., Kato, T. & Fujino, K., Jan 28 2013, In : IEEE Transactions on Applied Superconductivity. 23, 3, 6374230.

Research output: Contribution to journalArticle

coils
alternating current
filaments
Superconducting coils
wire
2012
11 Citations (Scopus)

Characterization of magnetic markers and sensors for liquid-phase immunoassays using brownian relaxation

Bhuiya, A. K., Asai, M., Watanabe, H., Hirata, T., Higuchi, Y., Yoshida, T. & Enpuku, K., Oct 29 2012, In : IEEE Transactions on Magnetics. 48, 11, p. 2838-2841 4 p., 6332694.

Research output: Contribution to journalArticle

SQUIDs
Magnetic moments
Fluxes
Magnetic sensors
Signal detection
13 Citations (Scopus)

Characterization of magnetic markers for liquid-phase immunoassays using brownian relaxation

Enpuku, K., Watanabe, H., Higuchi, Y., Yoshida, T., Kuma, H., Hamasaki, N., Mitsunaga, M., Kanzaki, H. & Kandori, A., Feb 1 2012, In : Japanese journal of applied physics. 51, 2 PART 1, 023002.

Research output: Contribution to journalArticle

immunoassay
markers
liquid phases
Nanoparticles
Magnetic relaxation
2 Citations (Scopus)

Consideration of operating characteristics for bi-directional LLC resonant converter

Yang, S., Abe, S., Zaitsu, T., Yamamoto, J., Shoyama, M. & Ninomiya, T., 2012, In : International Journal of Renewable Energy Research. 2, 4, p. 790-796 7 p.

Research output: Contribution to journalArticle

DC-DC converters
26 Citations (Scopus)

Detection of SF 6 decomposition products generated by DC corona discharge using a carbon nanotube gas sensor

Martin, Y., Li, Z., Tsutsumi, T., Shou, R., Nakano, M., Suehiro, J. & Ohtsuka, S., Apr 1 2012, In : IEEE Transactions on Dielectrics and Electrical Insulation. 19, 2, p. 671-676 6 p., 6180262.

Research output: Contribution to journalArticle

Chemical sensors
Carbon nanotubes
Decomposition
Electric potential
Electric switchgear
3 Citations (Scopus)

Dielectrophoretic assembly of semiconducting carbon nanotubes separated and enriched by spin column chromatography and its application to gas sensing

Nakano, M., Fujioka, M., Mai, K., Watanabe, H., Martin, Y. & Suehiro, J., Apr 1 2012, In : Japanese journal of applied physics. 51, 4 PART 1, 045102.

Research output: Contribution to journalArticle

Column chromatography
Single-walled carbon nanotubes (SWCN)
chromatography
Chemical sensors
Carbon nanotubes