Kazutaka Nishikawa

ORCID: 0000-0002-2796-1085
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Research Areas
  • Transition Metal Oxide Nanomaterials
  • Phytochemistry and Biological Activities
  • Thermal Radiation and Cooling Technologies
  • Heat Transfer and Boiling Studies
  • Ginger and Zingiberaceae research
  • Heat transfer and supercritical fluids
  • Ga2O3 and related materials
  • Fibroblast Growth Factor Research
  • Photosynthetic Processes and Mechanisms
  • Nuclear reactor physics and engineering
  • Flavonoids in Medical Research
  • ZnO doping and properties
  • Plant biochemistry and biosynthesis
  • Magnetic properties of thin films
  • Nuclear Engineering Thermal-Hydraulics
  • 3D Printing in Biomedical Research
  • Physics of Superconductivity and Magnetism
  • Spacecraft and Cryogenic Technologies
  • Proteoglycans and glycosaminoglycans research
  • Phytochemicals and Antioxidant Activities
  • Photoreceptor and optogenetics research
  • Electronic Packaging and Soldering Technologies
  • Plant tissue culture and regeneration
  • Semiconductor Quantum Structures and Devices
  • Gas Sensing Nanomaterials and Sensors

Toyota Central Research and Development Laboratories (Japan)
2012-2025

Toyota Technological Institute
2021-2023

Naruto University of Education
2002-2020

Toyota Motor Corporation (Switzerland)
2012-2019

Kyushu University
1960-2016

Kanazawa Institute of Technology
2016

TDK (Japan)
2014

Olympus (Japan)
2014

Osaka University
1970-2012

Osaka Kyoiku University
2010

Two monoclonal antibodies (mAbs) against bovine heparin-binding growth factor II (HBGF-II)/basic fibroblast (bFGF) were obtained from mouse hybridoma cell lines. They highly specific for bFGF bovine, human, and sources did not cross-react with I (HBGF-I)/acidic (aFGF). The immunoglobulin class subclass of these mAbs IgG1, K. apparent dissociation constant (Kd) ranged 10(-9) to 10(-10) M. One mAb (bFM-2) also cross-reacted heat-inactivated bFGF, while the other (bFM-1) not, suggesting that...

10.1073/pnas.86.24.9911 article EN Proceedings of the National Academy of Sciences 1989-12-01

Vanadium dioxide (VO2) exhibits a phase-change behavior from the insulating state to metallic around 340 K. By using this effect, we experimentally demonstrate radiative thermal rectifier in far-field regime with thin film VO2 deposited on silicon wafer. A rectification contrast ratio as large two is accurately obtained by utilizing one-dimensional steady-state heat flux measurement system. We develop theoretical model of optical responses materials retrieved measured mid-infrared reflection...

10.1063/1.4905132 article EN Applied Physics Letters 2014-12-22

10.1016/0017-9310(69)90153-7 article FR International Journal of Heat and Mass Transfer 1969-08-01

Dynamic control of electromagnetic heat transfer without changing mechanical configuration opens possibilities in intelligent thermal management nanoscale systems. We confirmed by experiment that the radiative is dynamically modulated beyond blackbody limit. The near-field exchange mediated phonon-polariton controlled metal-insulator transition tungsten-doped vanadium dioxide. functionalized flux transferred over an area 1.6 cm2 across a 370 nm gap, which maintained microfabricated spacers...

10.1021/acs.nanolett.7b01422 article EN Nano Letters 2017-06-08

Thermal information processing is attracting much interest as an analog of electronic computing. We experimentally demonstrated a radiative thermal memory utilizing phase change material. The hysteretic metal-insulator transition vanadium dioxide (VO2) allows us to obtain multilevel memory. developed Preisach model explain the heat transfer between VO2 film and fused quartz substrate. transient response our predicted by agrees well with measured response. Our paves way for contactless management.

10.1063/1.4941405 article EN Applied Physics Letters 2016-02-01

Recent findings on the translocation of intact fibroblast growth factor (FGF) into cell nucleus suggest that it functions directly in nuclear events. We examined effect human basic FGF (bFGF) gene transcription a cell-free system. When mouse genes encoding phosphoglycerate kinases 1 and 2 (Pgk-1 Pgk-2) were transcribed by using extracts Ehrlich ascites tumor cells, affected different ways: presence bFGF, Pgk-1 was inhibited, whereas Pgk-2 enhanced. viral tested, adenovirus major late DNA...

10.1073/pnas.89.12.5216 article EN Proceedings of the National Academy of Sciences 1992-06-15

10.1016/0017-9310(60)90024-7 article EN International Journal of Heat and Mass Transfer 1960-08-01

Global energy shortage necessitates enhancing environmentally friendly and energy-saving technologies. This study demonstrates a smart thermal emitter (STE) with high visual transparency temperature-dependent emissivity to realize management in buildings or automobiles. The STE consisting of layered transparent conductive oxide (TCO), zinc sulfide (ZnS), thin vanadium dioxide (VO2) films was fabricated using the sputtering process. exhibited transmittance visible region owing extremely VO2...

10.1063/5.0242710 article EN cc-by Journal of Applied Physics 2025-02-24

Vanadium dioxide (VO2) is a promising phase-change material (PCM) in controlling radiative heat transfer because of the large permittivity contrast between phases and moderate metal-insulator transition temperature 340 K. Widely adopted bare VO2 films on dielectric substrate permit more insulating state compared to that metallic state. In this paper, we present PCM-insulator-metal metasurfaces invert thermal contrast, which means flux promoted The exhibit similar but broader resonance...

10.1063/1.5025947 article EN cc-by APL Photonics 2018-07-02

To realize highly efficient intermediate-band (IB) solar cells, long lifetime of photo-generated carriers in the IB is essential. For this purpose, we propose a concept for absorbers using GaAs wall-inserted type II InAs quantum-dots (QDs), which electrons at QDs and holes valence band GaAsSb layers are farther separated compared to those conventional QDs. We fabricated InAs/GaAs/GaAs0.82Sb0.18 performed time-resolved photoluminescence spectroscopy. The obtained was as 220 ns IB.

10.1063/1.3694284 article EN Applied Physics Letters 2012-03-12

The roles of ubiquinone-IO and rhodoquinone in photosynthetic ATP formation were studied with chromatophores from a blue-green mutant (G-9) Rhodospirillum rubrum.2. Chromatophores contained ubiquinone-10 amounts equal approximately to 50% lo%, respectively, on molar basis, that bacteriochlorophyll.Other quinones not present appreciable amounts.3. Extraction isooctane lyophilized greatly lowered the activity measured presence either 6.7 X lo-' M ascorbate (ascorbate-induced) or 4.0 phenazine...

10.1016/s0021-9258(18)93370-3 article EN cc-by Journal of Biological Chemistry 1968-06-01

A Ca-bridged siloxene resulting from the deintercalation of Ca CaSi<sub>2</sub>was synthesized, which shows stable Li storage performance.

10.1039/c5ta00321k article EN Journal of Materials Chemistry A 2015-01-01

Nanoparticles (NPs) of vanadium dioxide (VO2) in the metal state exhibit localized surface plasmon resonance (LSPR) at 1200–1600 nm, which fills gap between absorption ranges silicon and LSPR conventional transparent conductor NPs (ZnO:Al, In2O3:Sn, etc.). However, two issues lithographic process for NP formation metal-insulator transition temperature (69 °C) higher than room have made it difficult to use VO2 applications such as energy conversion devices, near infrared (NIR) light...

10.1063/1.4997352 article EN Applied Physics Letters 2017-11-06

Mycolic acid-containing bacteria inactivate rifampicin in a variety of ways such as glucosylation, ribosylation, phosphorylation and decolorization. These inactivations were found to be species-specific phenomena Nocardia related taxa. Gordona, Tsukamurella fast-growing Mycobacterium modified by ribosylation the 23-OH group antibiotic. Such was not observed Rhodococcus Corynebacterium, but 21-OH one strain Rhodococcus. antibiotic glucosylation (23-OH group) phosphorylation, observed.

10.1111/j.1348-0421.1996.tb03303.x article EN Microbiology and Immunology 1996-01-01

Magnetization, specific heat, and neutron diffraction measurements are used to map out the entire magnetic phase diagram of KFe(MoO4)2. This stacked triangular antiferromagnet is structurally similar famous multiferroic system RbFe(MoO4)2. Because an additional small crystallographic distortion, it contains two sets inequivalent distorted lattices. As a result, spin network breaks down into intercalated yet almost independent subsystems. One collinear that shows simple spin-flop behavior in...

10.1103/physrevlett.102.037202 article EN Physical Review Letters 2009-01-21
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