A5075520381- Electrochemical sensors and biosensors
- Analytical Chemistry and Sensors
- Seismology and Earthquake Studies
- Biosensors and Analytical Detection
- Advanced Chemical Sensor Technologies
- Advanced biosensing and bioanalysis techniques
- bioluminescence and chemiluminescence research
- earthquake and tectonic studies
- Quantum Dots Synthesis And Properties
- Microfluidic and Capillary Electrophoresis Applications
- Rare-earth and actinide compounds
- Iron-based superconductors research
- Water Quality Monitoring and Analysis
- Wireless Communication Networks Research
- Advanced Condensed Matter Physics
- Chalcogenide Semiconductor Thin Films
- Microbial Fuel Cells and Bioremediation
- Earthquake and Tsunami Effects
- Innovative Microfluidic and Catalytic Techniques Innovation
- Mobile Agent-Based Network Management
- Network Traffic and Congestion Control
- IPv6, Mobility, Handover, Networks, Security
- Microbial Community Ecology and Physiology
- Electrochemical Analysis and Applications
- Seismic Waves and Analysis
Tokyo University of Technology
2007-2024
The University of Tokyo
1996-2024
National Research Institute for Earth Science and Disaster Resilience
2010-2024
National Institute of Advanced Industrial Science and Technology
2004-2013
University of Science and Technology of China
2009-2010
National Synchrotron Radiation Laboratory
2009-2010
NTT (Japan)
2002-2006
National Institute of Information and Communications Technology
2002
Kyushu University
1989-1999
Kyushu Institute of Technology
1985
We report muon spin rotation ($μ$SR) experiments together with first-principles calculations on microscopic properties of superconductivity in the kagome superconductor LaRu$_3$Si$_2$ $T_{\rm c}$ ${\simeq}$ 7K. find that calculated normal state band structure features a flat and Dirac as well van Hove points formed by Ru-$dz^2$ orbitals near Fermi level. Below c}$, $μ$SR reveals isotropic type-II superconductivity, which is robust against hydrostatic pressure up to 2 GPa. Intriguingly, ratio...
Microbial biofilms present one of the most widespread forms life on Earth. The formation microbial communities various surfaces presents a major challenge in variety fields, including medicine, food industry, shipping, etc. At same time, this process can also be used for benefit humans-in bioremediation, wastewater treatment, and biotechnological processes. main direction using electroactive is their incorporation into composition biosensor biofuel cells This review examines fundamental...
Well-dispersed Y2O3:Eu nanocrystals, with a size less than 10 nm, and self-assembled nanodisks (see Figure) could be synthesized by simple organometallic route. Two strong emission peaks located between 610 630 2.6 % quantum yield, are achievable upon excitation at 330 nm. Excellent dispersibility, long lifetime, improved may allow nanocrystals to useful for biological labeling.
An air-stable, low-toxicity, single-molecular source for ZnS is demonstrated to be an appropriate reagent synthesize highly luminescent ZnS-capped CdSe with a narrow size distribution. A photoluminescence quantum yield of above 50 % and peak full width at half maximum around 32 nm could obtained after synthesis using microreactor. The surface the nanocrystals can hydrophilic, while retaining high yield. Microscopic observation shows that accurate time control, which achieved by microreactor,...
A novel biosensor for the determination of biochemical oxygen demand (BOD) was developed using potassium hexacyanoferrate(III) [HCF(III)] as a mediator. The sensor element consists three-electrode system, with both working and counter electrodes compactly integrated disposable etching electroplating processes. Pseudomonas fluorescens biovar V (isolated from wastewater treatment plant) immobilized on surface electrode poly(vinyl alcohol)-quaternized stilbazol (PVA-SbQ) photopolymer gel....
Abstract The purpose of the present study was to investigate fluidic behavior in a microchannel with hair‐pin curves, using three‐dimensional (3‐D) computational fluid dynamics simulation, and observe 3‐D flow pattern, validate simulation. used fabricated on PMMA plate flat‐end mill. channel width depth were 210 205 μm, respectively, radius each curve 500 μm. Two liquids; purified water an aqueous solution 50 μmol/L fluorescein, introduced into through different inlets merged, forming...
We have fabricated an integrated flow cell as a total microanalysis system (microTAS). This (size, 15 x 20 mm; inner volume, 12.2 microL) was designed for rational analyzing of lactate determination serum. made by micromachining techniques and consisted two hollows oxidase (LOD) reactor mixing cell, spiral groove, three penetrated holes. To form the capillary, these patterns, etched on silicon wafer, were attached to glass plate anodic bonding method. A photodiode put under part capillary....
Abstract The kagome lattice is an intriguing and rich platform for discovering, tuning understanding the diverse phases of quantum matter, crucial advancing modern future electronics. Despite considerable efforts, accessing correlated at room temperature has been challenging. Using single-crystal X-ray diffraction, we discovered charge order above in La(Ru 1− x Fe ) 3 Si 2 ( = 0, 0.01, 0.05), where related to out-of-plane Ru atom displacements appears below T CO,I ≃ 400 K. secondary ordered...
Rapid economic growth in Japan resulted serious organic pollution the 1960s. In contrast, recent is caused primarily by phosphorus-based anthropogenic eutrophication, which also induces heavy metal pollution. present review, causes of are briefly introduced, and our approaches, based on studies environmental water biosensing methods as tools for estimating degrees pollution, introduced.
Abstract This paper proposes a rapid method of estimating tsunami source locations using real‐time ocean‐bottom hydrostatic pressure data from dense offshore observation network. We defined two characteristic representing the disturbance and initial sea surface height distribution. First, we centroid location (TCL), which is maximum absolute amplitude changes. Second, values displacements. To determine whether TCL can approximate source, examined approximately 1000 near‐field synthetic...
The design and performance of a compact fluorescense XAFS apparatus equipped with microfluidic cell for in situ studies nanoparticles are described. CdSe were prepared by solution reaction starting from trioctylphosphine-Se. Time-resolved experiments performed precisely controlling the reactor coordinates (x,y), allowing synchrotron X-ray beam to travel along channel, covering nucleation initial growth nanoparticles. Detailed analysis EXAFS data combined UV-vis spectra allow reliable...
The role of dodecylamine (DDA) as surface ligand in the initial nucleation and growth processes CdSe nanocrystals was studied by in-situ extended X-ray absorption fine structure a microfluidic reactor. results combined with ex-situ UV−vis absorbance spectra provided kinetic information grown noncoordinating solvent octadecene. We found that stage is significantly accelerated presence DDA: without addition DDA took about 5 s, while it shortened to within 1 s 10 wt % DDA. Increasing...
Abstract A microreaction system consisting of a micromixer and capillary reaction component was developed for the continuous production amino acid polymers. silicon glass based chip‐type tethered with three dimensional microchannel network fabricated by combination maskless technique, dry‐etching, sequential anode bonding. The microreactor constructed connecting microcapillary syringe pump. resulting showed excellent controllability molecular weight distribution polyamino synthesis. also...