A5009838353- Glass properties and applications
- Luminescence Properties of Advanced Materials
- Fuel Cells and Related Materials
- Bone Tissue Engineering Materials
- Gold and Silver Nanoparticles Synthesis and Applications
- Nonlinear Optical Materials Studies
- Electrocatalysts for Energy Conversion
- Photorefractive and Nonlinear Optics
- Quantum Dots Synthesis And Properties
- Conducting polymers and applications
- Advanced Battery Materials and Technologies
- Advancements in Solid Oxide Fuel Cells
- Analytical Chemistry and Sensors
- Solid State Laser Technologies
- Mesoporous Materials and Catalysis
- Gas Sensing Nanomaterials and Sensors
- Advanced battery technologies research
- Quantum optics and atomic interactions
- Phase-change materials and chalcogenides
- Photonic Crystals and Applications
- biodegradable polymer synthesis and properties
- Recycling and utilization of industrial and municipal waste in materials production
- Advanced ceramic materials synthesis
- Nanocluster Synthesis and Applications
- Nuclear materials and radiation effects
Nagoya Institute of Technology
2010-2023
Duy Tan University
2016-2022
Toyota Physical and Chemical Research Institute
2014-2019
Toyota Central Research and Development Laboratories (Japan)
2014-2018
Ton Duc Thang University
2016-2017
Toyota Motor Corporation (Switzerland)
1987-2015
Mitsubishi Electric (United States)
2015
Mitsubishi Electric (Japan)
1992-2014
Shanghai Institute of Ceramics
2007-2014
Toyota Motor Corporation (Japan)
2014
The controllable synthesis of nanocrystals with different shapes is very important and challenging. In the present work, silver nanoparticles structural architectures, from nanorods, triangular plates, hexagonal nanocubes to polyhedrons have been synthesized successfully in high yield by a solvothermal process. Especially, unique enneahedral nanoplates are also observed. These exhibit tunable surface plasmon resonance properties visible near-infrared regions. Those were self-assembled on...
We have investigated the effects of nanometer-sized silver particles on optical properties Eu3+ ions in SiO2 glass. Glass samples were prepared by sol-gel method. The mean particle size and volume fraction particles, which estimated from UV-VIS absorption spectra using Mie-Drude theory modified electron free path model, rapidly increased with reduction time Ag+ up to ∼3 min at 900 °C. fluorescence for excitation N2 laser was greatly enhanced presence 4.3 nm size. Our experimental results...
In this paper, the electrochemical properties and performances of all-solid-state lithium polymer batteries (LPBs) using standard PEO-based solid-state electrolytes (SPEs) are reported discussed. The assembled cell showed stable charge–discharge cycles (>150 cycles) at 30 °C. This is due to desirable solid electrolyte interface (SEI) film formation SPE | cathode first cycle indicated by activation energy measurements for interfacial Li ion exchange reaction. However, sudden capacity fading...
Novel surface-enhanced Raman scattering (SERS) substrates with high SERS-activity are ideal for novel SERS sensors, detectors to detect illicitly sold narcotics and explosives. The key the wider application of technique is develop plasmon resonant structure geometries enhance signals control periodic ordering these structures over a large area obtain reproducible enhancement. In this work, simple Ar+-ion sputtering route has been developed fabricate silver nanoneedles arrays on silicon...
A simple methodology has been developed to enable a greater enhancement of fluorescence from europium (Eu3+)-doped silica gels containing adsorbed silver (Ag) islands. The procedure involves the preparation Eu3+-doped by sol−gel method and then immersion in Ag sol for ca. 48 h allow adsorption islands on pore surfaces gels. UV−vis spectra show characteristic surface plasmon resonance at around 390 nm, transmission electron microscopy (TEM) presents islandlike particles photoluminescence...
A simple strategy is presented for the construction of an electrochemical interface with a tunable kinetic barrier by self-assembling organically modified silica gel and gold nanoparticles. Self-assembly layer carried out from hydrolyzed sol precursor mercaptopropyltrimethoxysilane. The this self-assembled silicate film nanoparticles that are into network. electrochemistry ferricyanide redox reaction used as marker to probe interface.
The localized surface plasmon resonance (LSPR) is a collective oscillation of the nanoparticle conduction electrons. LSPR excitation in silver and gold nanoparticles produces strong extinction scattering spectra that recent years have been used for important sensing spectroscopy applications. Tuning optoelectronic properties by controlling coupled SP modes metals one major challenges area metal nanomaterials. Here we develop simple method to fabricate linear-chainlike aggregates (so-called...
Silica glasses with high surface area were prepared by the sol−gel method, electrical conductivity of which was measured as a function content adsorbed water. The obtained heating at 400−800 °C had specific areas 700−900 m2/g glass and exhibited room-temperature conductivities 10-6−10-3 S/cm absorbing water in pores. activation energy for conduction linearly decreased increasing logarithm product proton concentration. On other hand, increase represented to be proportional Electrical...
Surface-enhanced Raman scattering (SERS) integrates high levels of sensitivity with spectroscopic precision and has tremendous potential for chemical biomolecular sensing. The key to the wider application spectroscopy using roughened metallic surfaces is development highly enhancing substrates analytical purposes. Here, we demonstrate a simple strategy self-assembling silver nanochains on glass sensitive SERS substrates. chain length short Ag can be controlled by adjusting concentration...
In this paper, Pt nanoparticles with good shapes of nanocubes and nano-octahedra well-controlled sizes in the range 5-7 8-12 nm, respectively, have been successfully synthesized. The modified polyol method by adding silver nitrate varying molar ratio solutions H(2)PtCl(6) has used to produce size shape be controlled. morphology studied transmission electron microscopy (TEM) high resolution TEM (HRTEM). results shown that their very sharp exist main forms cubic, cuboctahedral, octahedral...
Abstract This work presents the results of successful preparation Pd nanoparticles by polyol method and proposed techniques controlling their size shape. Polyvinylpyrrolidone (PVP) stabilized various shapes with largest sizes in forms octahedrons (24 nm), tetrahedrons (22 nm) cubes (20 have been obtained alcohol reduction ethanol addition a hydrochloric acid catalyst. Moreover, PVP–Pd well-controlled spherical also prepared modified method. cubic, octahedral, tetrahedral achieved using...
The effect of molecular water on proton conduction was quantitatively analyzed from conductivity measurements silica glasses with and without molecules. activation energy for linearly decreased increasing logarithm concentration containing only protons as charge carriers the product both water. Electrical in molecules is associated hopping between hydroxyl its related to necessary dissociation OH ${\mathrm{H}}_{2}$O.