K
Keiji Enpuku
Researcher at Kyushu University
Publications - 241
Citations - 3523
Keiji Enpuku is an academic researcher from Kyushu University. The author has contributed to research in topics: Magnetic nanoparticles & SQUID. The author has an hindex of 28, co-authored 238 publications receiving 3216 citations.
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Flux‐flow‐type Josephson oscillator for millimeter and submillimeter wave region. III. Oscillation stability
TL;DR: In this paper, the authors proposed a new junction geometry without self-field and resonant effects and obtained current steps whose slope is about one hundred times steeper than those obtained with the conventional overlap geometry and whose height attains a...
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Flux-flow-type Josephson oscillator for millimeter and submillimeter wave region. II. Modeling
TL;DR: In this article, a theoretical study of a travelling-wave-type oscillator, which utilizes a flux flow in a long Josephson junction for use as a local oscillator in the integrated superconducting receiver system, is made.
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Characterization of magnetically fractionated magnetic nanoparticles for magnetic particle imaging
TL;DR: In this paper, the authors have characterized fractionated magnetic nanoparticles (MNPs) for magnetic particle imaging and found that MS1 showed a 2.5-fold increase in the harmonic spectrum over that of the original MNPs.
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Noise characteristics of a dc SQUID with a resistively shunted inductance. II. Optimum damping
TL;DR: In this article, the effects of damping resistance on noise characteristics of a dc SQUID are studied theoretically, where the damping resist is in shunt with a loop inductance of the SQUID.
Journal ArticleDOI
SQUIDs in biomagnetism: a roadmap towards improved healthcare
Rainer Körber,Jan Hendrik Storm,H.C. Seton,Jyrki P. Mäkelä,Ritva Paetau,Lauri Parkkonen,Christoph Pfeiffer,Bushra Riaz,Justin F. Schneiderman,Hui Dong,Seong min Hwang,Lixing You,Ben Inglis,John Clarke,Michelle A. Espy,Risto J. Ilmoniemi,Per E. Magnelind,Andrei N. Matlashov,Jaakko O. Nieminen,Petr Volegov,Koos C. J. Zevenhoven,Nora Höfner,Martin Burghoff,Keiji Enpuku,Shieh-Yueh Yang,Jen Jei Chieh,Jukka Knuutila,Petteri Laine,Jukka Nenonen +28 more
TL;DR: A roadmap of applications of superconducting QUantum interference devices (SQUID) can be found in this article, where the authors present a detailed review of the current state-of-the-art in biomedical applications.