Research Output 1979 2019

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2019

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

Eddy Current Testing Using Square-wave Inverter for Thickness Inspection of Steel Plate

Sasayama, T. & Enpuku, K., Jan 1 2019, In : Sensors and Materials. 31, 10, p. 3023-3032 10 p.

Research output: Contribution to journalArticle

Open Access
Eddy current testing
Steel
square waves
eddy currents
inspection

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
1 Citation (Scopus)

Low-frequency eddy current testing using HTS coil driven by PWM inverter

Sasayama, T. & Enpuku, K., Jan 1 2019, In : International Journal of Applied Electromagnetics and Mechanics. 59, 4, p. 1275-1282 8 p.

Research output: Contribution to journalArticle

Eddy current testing
pulse duration modulation
eddy currents
Pulse width modulation
coils
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
1 Citation (Scopus)

Optimal Frequency of Low-Frequency Eddy-Current Testing for Detecting Defects on the Backside of Thick Steel Plates

Yoshimura, W., Sasayama, T. & Enpuku, K., Jul 1 2019, In : IEEE Transactions on Magnetics. 55, 7, 8645817.

Research output: Contribution to journalArticle

Eddy current testing
Steel
Defects
Skin effect
Inspection

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
4 Citations (Scopus)

Detection of Slit Defects on Backside of Steel Plate Using Low-Frequency Eddy-Current Testing

Yoshimura, W., Tanaka, R., Sasayama, T. & Enpuku, K., Nov 2018, In : IEEE Transactions on Magnetics. 54, 11, 8405746.

Research output: Contribution to journalArticle

Eddy current testing
Steel
Defects
Eddy currents
Fluxes
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

Improving tip position-estimation performance of gastric tube by compensating geomagnetic field with offset coils

Sasayama, T., Gotoh, Y. & Enpuku, K., Nov 1 2018, In : IEEE Transactions on Magnetics. 54, 11, 8418311.

Research output: Contribution to journalArticle

Magnetic sensors
Magnetoresistance
Permanent magnets
Sensors
Error analysis

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

Suppression of flux creep in HTS coil by applying low AC magnetic field

Kajikawa, K., Honda, T. & Tadakuma, K., Apr 2018, In : IEEE Transactions on Applied Superconductivity. 28, 3, 8246546.

Research output: Contribution to journalArticle

alternating current
Creep
coils
retarding
Magnetic fields
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
1 Citation (Scopus)

Wash-free detection of C-reactive protein based on third-harmonic signal measurement of magnetic markers

Enpuku, K., Shibakura, M., Arao, Y., Mizoguchi, T., Kandori, A., Hara, M. & Tsukada, K., Sep 2018, In : Japanese Journal of Applied Physics. 57, 9, 090309.

Research output: Contribution to journalArticle

signal measurement
markers
proteins
Proteins
harmonics
2017
2 Citations (Scopus)

A Gastric Tube Monitoring System for Clinical Applications

Sasayama, T., Gotoh, Y. & Enpuku, K., Nov 2017, In : IEEE Transactions on Magnetics. 53, 11, 7946121.

Research output: Contribution to journalArticle

Inverse problems
Permanent magnets
Tablets
Monitoring
Sensors
8 Citations (Scopus)

Eddy Current Testing System Using HTS-SQUID with External Pickup Coil Made of HTS Wire

Tsukamoto, A., Hato, T., Adachi, S., Oshikubo, Y., Cheng, W., Enpuku, K., Tsukada, K. & Tanabe, K., Jun 2017, In : IEEE Transactions on Applied Superconductivity. 27, 4, 7750546.

Research output: Contribution to journalArticle

Eddy current testing
High temperature superconductors
Pickups
SQUIDs
eddy currents
15 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
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
1 Citation (Scopus)
Nanoparticles
harmonics
nanoparticles
Hysteresis loops
Magnetic moments
6 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
2016
2 Citations (Scopus)

AC loss evaluation of an HTS insert for high field magnet cooled by cryocoolers

Kajikawa, K., Awaji, S. & Watanabe, K., Dec 1 2016, In : Cryogenics. 80, p. 215-220 6 p.

Research output: Contribution to journalArticle

high field magnets
inserts
Magnets
alternating current
evaluation
15 Citations (Scopus)

Estimation of magnetic moment and anisotropy energy of magnetic markers for biosensing application

Enpuku, K., Sasayama, T. & Yoshida, T., May 14 2016, In : Journal of Applied Physics. 119, 18, 184902.

Research output: Contribution to journalArticle

markers
magnetic moments
anisotropy
energy
curves
1 Citation (Scopus)

Experimental and simulation study on inductance and equivalent resistance using equivalent circuit model and finite element method

Sasayama, T., Yanamoto, Y., Funaji, S. & Ao, T., Jan 1 2016, In : IEEJ Journal of Industry Applications. 5, 5, p. 392-397 6 p.

Research output: Contribution to journalArticle

Equivalent circuits
Inductance
Induction heating
Finite element method
10 Citations (Scopus)

Highly sensitive third-harmonic detection method of magnetic nanoparticles using an AC susceptibility measurement system for liquid-phase assay

Mizoguchi, T., Kandori, A., Kawabata, R., Ogata, K., Hato, T., Tsukamoto, A., Adachi, S., Tanabe, K., Tanaka, S., Tsukada, K. & Enpuku, K., Aug 1 2016, In : IEEE Transactions on Applied Superconductivity. 26, 5, 7492213.

Research output: Contribution to journalArticle

Assays
alternating current
liquid phases
Nanoparticles
magnetic permeability
5 Citations (Scopus)

Improved liquid-phase detection of biological targets based on magnetic markers and high-critical-temperature superconducting quantum interference device

Ura, M., Noguchi, K., Ueoka, Y., Nakamura, K., Sasayama, T., Yoshida, T. & Enpuku, K., Jun 2016, In : IEICE Transactions on Electronics. E99C, 6, p. 669-675 7 p.

Research output: Contribution to journalArticle

SQUIDs
Biotin
Agglomeration
Streptavidin
Liquids
7 Citations (Scopus)
shaking
Induced currents
Tapes
tapes
Copper
8 Citations (Scopus)

Thickness Measurement of an Iron Plate Using Low-Frequency Eddy Current Testing with an HTS Coil

Sasayama, T., Ishida, T., Matsuo, M. & Enpuku, K., Aug 1 2016, In : IEEE Transactions on Applied Superconductivity. 26, 5, 7420626.

Research output: Contribution to journalArticle

Eddy current testing
Thickness measurement
eddy currents
coils
Iron
2015
2 Citations (Scopus)

A 1.5-T magic-angle spinning NMR magnet: 4.2-K performance and field mapping test results

Voccio, J., Hahn, S., Kim, Y., Song, J., Kajikawa, K., Noguchi, S., Bascunan, J. & Iwasa, Y., Jun 1 2015, In : IEEE Transactions on Applied Superconductivity. 25, 3, 6971077.

Research output: Contribution to journalArticle

Magic angle spinning
metal spinning
Magnets
magnets
Nuclear magnetic resonance
7 Citations (Scopus)

AC losses of an HTS insert in a 25-T cryogen-free superconducting magnet

Awaji, S., Kajikawa, K., Watanabe, K., Oguro, H., Mitose, T., Fujita, S., Daibo, M., Iijima, Y., Miyazaki, H., Takahashi, M. & Ioka, S., Jun 1 2015, In : IEEE Transactions on Applied Superconductivity. 25, 3, 6945815.

Research output: Contribution to journalArticle

Superconducting magnets
superconducting magnets
inserts
alternating current
Hysteresis
59 Citations (Scopus)

A high-resolution 1.3-GHz/54-mm LTS/HTS NMR magnet

Iwasa, Y., Bascuñán, J., Hahn, S., Voccio, J., Kim, Y., Lécrevisse, T., Song, J. & Kajikawa, K., Jun 1 2015, In : IEEE Transactions on Applied Superconductivity. 25, 3, 6926794.

Research output: Contribution to journalArticle

Magnets
magnets
coils
Nuclear magnetic resonance
nuclear magnetic resonance
13 Citations (Scopus)
moment distribution
iron oxides
magnetometers
low concentrations
magnetic moments
12 Citations (Scopus)
normal density functions
nanoparticles
curves
magnetic moments
liquid phases
25 Citations (Scopus)

Designs and tests of shaking coils to reduce screening currents induced in HTS insert coils for NMR magnet

Kajikawa, K., Gettliffe, G. V., Chu, Y., Miyagi, D., Lécrevisse, T. P., Hahn, S., Bascuñán, J. & Iwasa, Y., Jun 1 2015, In : IEEE Transactions on Applied Superconductivity. 25, 3, 6926807.

Research output: Contribution to journalArticle

shaking
Induced currents
inserts
Magnets
Screening
18 Citations (Scopus)

Effect of viscosity on harmonic signals from magnetic fluid

Yoshida, T., Bai, S., Hirokawa, A., Tanabe, K. & Enpuku, K., Apr 15 2015, In : Journal of Magnetism and Magnetic Materials. 380, p. 105-110 6 p.

Research output: Contribution to journalArticle

Magnetic fluids
Relaxation time
relaxation time
Viscosity
viscosity
1 Citation (Scopus)

Evaluation of Complex Harmonic Signals from Magnetic Nanoparticles for Magnetic Particle Imaging

Yoshida, T., Tsujimura, N., Tanabe, K., Sasayama, T. & Enpuku, K., Nov 1 2015, In : IEEE Transactions on Magnetics. 51, 11, 7118196.

Research output: Contribution to journalArticle

Nanoparticles
Imaging techniques
Relaxation time
Energy barriers
Magnetic moments

Harmonic signal detection based magnetic nanoparticle imaging system for breast cancer diagnosis

Othman, N. B., Yoshida, T. & Enpuku, K., Jan 1 2015, In : ARPN Journal of Engineering and Applied Sciences. 10, 20, p. 9934-9940 7 p.

Research output: Contribution to journalArticle

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

Hysteresis Loss of Fractionated Magnetic Nanoparticles for Hyperthermia Application

Sasayama, T., Yoshida, T., Tanabe, K., Tsujimura, N. & Enpuku, K., Nov 1 2015, In : IEEE Transactions on Magnetics. 51, 11, 7113867.

Research output: Contribution to journalArticle

Hysteresis
Nanoparticles
Hysteresis loops
Magnetic moments
Tumors
2 Citations (Scopus)

Improving Estimation Accuracy of Nasogastric Tube Tip Position Using Predata

Sasayama, T., Gotoh, Y. & Enpuku, K., Nov 1 2015, In : IEEE Transactions on Magnetics. 51, 11, 7115141.

Research output: Contribution to journalArticle

Sensors
Nutrition
Error analysis
Nutrients
Magnets

Magnetic liquid-phase immunoassay using magneto-resistive sensor

Sakakibara, T., Noguchi, K., Yoshida, T. & Enpuku, K., Jan 1 2015, In : Research Reports on Information Science and Electrical Engineering of Kyushu University. 20, 1, p. 21-27 7 p.

Research output: Contribution to journalArticle

Sensors
Liquids
Antigens
Magnetic moments
Washing
5 Citations (Scopus)

Narrowband magnetic nanoparticle imaging using cooled pickup coil and gradient field

Enpuku, K., Miyazaki, T., Morishita, M., Tsujita, Y., Matsuo, M., Bai, S., Sasayama, T. & Yoshida, T., Jan 1 2015, In : Japanese Journal of Applied Physics. 54, 5, 057002.

Research output: Contribution to journalArticle

Pickups
narrowband
coils
Nanoparticles
Imaging techniques
3 Citations (Scopus)

Narrowband Magnetic Particle Imaging Utilizing Electric Scanning of Field Free Point

Bai, S., Hirokawa, A., Tanabe, K., Sasayama, T., Yoshida, T. & Enpuku, K., Nov 1 2015, In : IEEE Transactions on Magnetics. 51, 11, 7113848.

Research output: Contribution to journalArticle

Nanoparticles
Scanning
Imaging techniques
Pickups
Signal detection
9 Citations (Scopus)

Theoretical and numerical examination of equivalent resistances in zone-control induction heating system

Sasayama, T., Yanamoto, Y., Funaji, S. & Ao, T., Jan 1 2015, In : IEEJ Journal of Industry Applications. 4, 1, p. 67-73 7 p.

Research output: Contribution to journalArticle

Induction heating
Inductance
Eddy currents
Networks (circuits)
2014
6 Citations (Scopus)

Application of minimum variance beamformer for estimation of tip position of a nasogastric tube

Sasayama, T., Gotoh, Y. & Enpuku, K., Nov 1 2014, In : IEEE Transactions on Magnetics. 50, 11, 6971254.

Research output: Contribution to journalArticle

Magnets
Brain
Liquids
Costs
3 Citations (Scopus)

Development of degaussing system of magnetic filters for high gradient magnetic separation to improve recovery ratio of trapped magnetic Nanobeads

Kajikawa, K., Ueda, H., Kamioka, Y., Agatsuma, K., Fuchino, S., Furuse, M., Iitsuka, T. & Nakamura, S., 2014, In : IEEE Transactions on Applied Superconductivity. 24, 3, 6595624.

Research output: Contribution to journalArticle

Degaussing
Magnetic filters
Magnetic separation
Superconducting magnets
superconducting magnets