A5057339950- ZnO doping and properties
- Gas Sensing Nanomaterials and Sensors
- Conducting polymers and applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Semiconductor materials and devices
- Advanced Sensor and Energy Harvesting Materials
- Advanced Memory and Neural Computing
- Nanowire Synthesis and Applications
- Analytical Chemistry and Sensors
- Ga2O3 and related materials
- Copper-based nanomaterials and applications
- Transition Metal Oxide Nanomaterials
- Supercapacitor Materials and Fabrication
- Metal and Thin Film Mechanics
- Electronic and Structural Properties of Oxides
- Advanced biosensing and bioanalysis techniques
- Electrochemical Analysis and Applications
- Advancements in Battery Materials
- Quantum Dots Synthesis And Properties
- Acoustic Wave Resonator Technologies
- Catalytic Processes in Materials Science
- Neuroscience and Neural Engineering
- Advanced Battery Materials and Technologies
- Meat and Animal Product Quality
- Advanced Chemical Sensor Technologies
National Science and Technology Development Agency
2016-2025
National Nanotechnology Center
2016-2025
Zoological Park Organization
2016
Osaka University
2009-2015
Osaka Research Institute of Industrial Science and Technology
2012-2013
The conversion of greenhouse gases, particularly CO 2 and CH 4 , into syngas via dry reforming methane (DRM) has effectively mitigated global warming climate change issues. research objectives are to enhance the DRM efficiency reduce coke formation using Ni catalysts supported on Mg‐modified Al O 3 in parallel plate dielectric barrier discharge. Raising calcination temperature from (Ni/Mg–Al ‐500) 700 °C ‐700) enhances NiO reduction temperatures, thus diminishing their reducibility. This...
Resistive switching (RS) memory effect in metal-oxide-metal junctions is a fascinating phenomenon toward next-generation universal nonvolatile memories. However the lack of understanding electrical nature RS has held back applications. Here we demonstrate bipolar cobalt oxides, such as conduction mechanism and location, by utilizing planar single oxide nanowire device. Experiments field devices multiprobe measurements have shown that nanoscale oxides originates from redox events near cathode...
Electrically driven resistance change in metal oxides opens up an interdisciplinary research field for next-generation non-volatile memory. Resistive switching exhibits electrical polarity dependent "bipolar-switching" and a independent "unipolar-switching", however tailoring the has been challenging issue. Here we demonstrate scaling effect on emergence of by examining resistive behaviors Pt/oxide/Pt junctions over 8 orders magnitudes areas. We show that two polarities can be categorised as...
A strategy to enhance the energy conversion performance of a cement-based triboelectric nanogenerator (TENG) has been proposed for large-scale harvesting from human footsteps. cement-carbon black (CB) composite is fabricated by incorporating CB nanoparticles with hydroxyethyl cellulose (HEC) admixture and used as material TENG. The cement-CB@HEC TENG exhibits 13-fold enhancement electrical output highest power density 2.38 W/m2. tremendous improvement ascribed good dispersion conductive in...
Hydrothermal ZnO nanowires have shown great potential for various nanoscale device applications due to their fascinating properties and low-temperature processing. A preferential crystal growth of (0001) polar plane is essential fundamental realize the anisotropic nanowire growth. Here we demonstrate that a critical concentration nucleation strongly depends on plane, which plays an important role hydrothermal nanowires. We measure rate each when varying Zn ionic species by using regular...
Analyzing sizes of DNA via electrophoresis using a gel has played an important role in the recent, rapid progress biology and biotechnology. Although analyzing over wide range short time is desired, no existing methods have been able to fully satisfy these two requirements. Here we propose novel method rigid 3D network structure composed solid nanowires within microchannel. This enables analysis under applied DC electric fields for large size (100 bp–166 kbp) 13 s, which are much wider...
Metal oxide nanowires hold great promise for various device applications due to their unique and robust physical properties in air and/or water also abundance on Earth. Vapor-liquid-solid (VLS) growth of metal offers the high controllability diameters spatial positions. In addition, VLS has applicability axial radial heterostructures, which are not attainable by other nanowire methods. However, material species available substantially limited even though variety species, fascinating...
Of late, air pollution in Asia has increased, particularly built-up areas due to rapid industrialization and urbanization. The present study sets out examine the impact that can have on health of people living inner city Bangkok, Thailand. Consequently, 2021, fine particulate matter (PM2.5) coarse (PM10) chemical composition sources are evaluated at three locations Bangkok. To identify possible such particulates, therefore, principal component analysis (PCA) technique is duly carried out. As...
Biodetection for non-invasive diagnostics of fluids, especially urine, remains a challenge to scientists due low target concentrations. And biological complexes the detection may contain contaminants that also interfere with any assay. Dengue non-structural 1 protein (Dengue NS1) is an important biomarker dengue hemorrhagic fever and shock syndrome. Here, we developed Au-decorated nanowire platform applied it sandwich fluorophore-linked immunosorbent well plate assay (FLISA) detect NS1 in...
Highly conductive and transparent indium–tin oxide (ITO) single-crystalline nanowires, formed by the vapor–liquid–solid (VLS) method, hold great promise for various nanoscale device applications. However, increasing an electrical conductivity of VLS grown ITO nanowires is still a challenging issue due to intrinsic difficulty in controlling complex material transports process. Here, we demonstrate crucial role preferential indium nucleation on using gold catalysts. In spite fact that vapor...
Thermoelectric generation capable of delivering reliable performance in the low-temperature range (<150 °C) for large-scale deployment has been a challenge mainly due to limited properties thermoelectric materials. However, realizing interdependence topological insulators and thermoelectricity, new research dimension on tailoring using topological-insulator boundary states enhancement emerged. Here, we demonstrate promising hybrid nanowire bismuth telluride (Bi2Te3) within conductive...
Zinc oxide (ZnO) nanowires have shown their potential in isolation of cancer-related biomolecules such as extracellular vesicles (EVs), RNAs, and DNAs for early diagnosis therapeutic development diseases. Since the function inorganic changes depending on morphology, previous studies established strategies to control morphology demonstrated attainment improved properties gas organic compound detection, dye-sensitized solar cells photoelectric conversion performance. Nevertheless,...
This study demonstrates the effect of surroundings on a memristive switching at nanoscale by utilizing an open top planar-type device. NiOx and CoOx devices have exhibited behavior under atmospheric pressure, whereas TiO2-x did not show even same surroundings. A has emerged when reducing ambient pressure and/or employing SiO2 passivation layer. These results reveal that thermodynamical interaction with critically determines occurrence via varying stability nonstoichiometry. Since this tends...
Here, we demonstrate a novel device structure design to enhance the electrical conversion output of triboelectric through piezoelectric effect called as piezo-induced (PIT) device. By utilizing piezopotential ZnO nanowires embedded into polydimethylsiloxane (PDMS) layer attached on top electrode conventional (Au/PDMS-Al), PIT exhibits an power density 50 μW/cm2, which is larger than that by up 100 folds under external applied force 8.5 N. We found Au not only enhances electron transfer from...
Ar&H2 plasma treatment was proposed to enhance the response of a p-CuAlO2 sensor toward volatile organic compounds. Comprehensive defect characterization studies indicate substantial increase surface unsaturated oxygen vacancy (VO) defects via treatment, which could provide active sites for molecule adsorption and subsequent interfacial redox reaction.
This study successfully demonstrated the tailoring properties of hafnium nitride (HfN) thin films via reactive gas-timing (RGT) RF magnetron sputtering for surface-enhanced Raman spectroscopy (SERS) substrate applications. The optimal RGT condition was investigated by varying duration time argon and nitrogen gas sequence. technique formed with a grain size approximately 15 nm. Additionally, atomic ratios can be controlled between 0.24 0.28, which is greater than conventional technique,...