A5008099662- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Advanced Surface Polishing Techniques
- Extraction and Separation Processes
- Gold and Silver Nanoparticles Synthesis and Applications
- Supercapacitor Materials and Fabrication
- Semiconductor materials and devices
- Advanced X-ray Imaging Techniques
- Liquid Crystal Research Advancements
- Electrical and Thermal Properties of Materials
- Diamond and Carbon-based Materials Research
- Advanced Electron Microscopy Techniques and Applications
- Plasmonic and Surface Plasmon Research
- Ferroelectric and Piezoelectric Materials
- Surface Modification and Superhydrophobicity
- Advanced Photocatalysis Techniques
- ZnO doping and properties
- Advanced biosensing and bioanalysis techniques
- Metal and Thin Film Mechanics
- Catalytic Processes in Materials Science
- Photonic Crystals and Applications
- Electronic and Structural Properties of Oxides
- Integrated Circuits and Semiconductor Failure Analysis
- X-ray Spectroscopy and Fluorescence Analysis
Shinshu University
2016-2025
Ōtani University
2013-2025
Nagano University
2015-2019
Engineering (Italy)
2016-2019
Faculty (United Kingdom)
2016-2019
Centre de Recherche en Économie et Statistique
2014-2016
Centre for Research in Engineering Surface Technology
2014-2016
Center for Responsible Travel
2014-2016
Industrial Technology Center of Okayama Prefecture
2016
Nagoya University
2007-2015
A significant increase in electroluminescence was achieved through coupling with localized surface plasmons a single layer of Au nanoparticles. We fabricated thin-film organic diode, which consists an indium tin oxide (ITO) anode, nanoparticle array, Cu phthalocyanine hole transport layer, tris(8-hydroxylquinolianato) aluminum (III) electron LiF injection and Al cathode. The device structure, size-controlled particles embedded on ITO, can be used to realize the optimum distance for...
So-called Z-scheme systems, which typically comprise an H2 evolution photocatalyst (HEP), O2 (OEP), and electron mediator, represent a promising approach to solar hydrogen production via photocatalytic overall water splitting (OWS). The mediator transferring photogenerated charges between the HEP OEP governs performance of such systems. However, existing mediators suffer from low stability, corrosiveness photocatalysts, parasitic light absorption. In present work, carbon nanotubes (CNTs)...
Multipodal Rh nanocrystals (see HRTEM image of a tripod) prepared through polyol synthesis display surface plasmon resonance bands in the visible region. Surface-enhanced Raman scattering from 4-mercaptopyridine adsorbed on multipods is 19-times stronger than that nanocubes. Supporting information for this article available WWW under http://www.wiley-vch.de/contents/jc_2002/2006/z503174_s.pdf or author. Please note: The publisher not responsible content functionality any supporting supplied...
The efficient photo-triggered surface relief formation in the H-boned supramolecular liquid crystalline system was performed for first time. This framework leads to facile and successful detachment of azobenzene unit from SRG inscribed film with exact retention morphological periodicity.
Highly dispersed primary Li(Ni<sub>1/3</sub>Co<sub>1/3</sub>Mn<sub>1/3</sub>)O<sub>2</sub> crystals, which showed high discharge capacity at a C-rate, were grown from Li<sub>2</sub>MoO<sub>4</sub> flux.
The synthesis of shape-controlled crystals has been a highly attractive research topic in modern materials chemistry. In this work, the growth Li(Ni1/3Co1/3Mn1/3)O2 (NCM) molten sulfate or carbonate salts (flux) at 1000 °C was systematically studied under various conditions. situ X-ray diffraction during and thermogravimetry-differential thermal analysis revealed that NCM flux controlled by liquid-phase sintering according to Ostwald ripening principle. We effect Na+ on crystal shapes found...
Ptychographic x-ray diffraction microscopy is a lensless imaging technique with large field of view and high spatial resolution, which also useful for characterizing the wavefront an probe. The performance this degraded by positioning errors due to drift between sample illumination optics. We propose experimental approach correcting demonstrate success two-dimensionally reconstructing both focused beam complex transmissivity weakly scattering objects at pixel resolution better than 10 nm in...
We report the first demonstration of coherent diffraction imaging analysis nanoparticles using focused hard X-ray free-electron laser pulses, allowing us to analyze size distribution particles as well electron density projection individual particles. measured 1000 single-shot patterns shape-controlled Ag nanocubes and Au/Ag nanoboxes estimated edge length from speckle patterns. then reconstructed two-dimensional with sub-10 nm resolution selected This method enables simultaneous synthesized...
Poly(ethylene oxide) side chains are the key structures in a novel azobenzene polymer with improved properties: firstly, they increase film fluidity, thus supporting surface relief gratings (SRGs) Ar ion lasers, and secondly, their cross-linking formaldehyde fixates this otherwise thermally reversible modification. The Figure shows an SRG-modified of new polymer.
X-ray waves in the center of beam waist nearly diffraction limited focused x-ray beams can be considered to have amplitude and phase that are both almost uniform, i.e., they plane waves. Here we report results an experimental demonstration high-resolution microscopy using wave synchrotron Kirkpatrik-Baez mirrors. A silver nanocube with edge length $\ensuremath{\sim}100\text{ }\text{nm}$ is illuminated a $\ensuremath{\sim}1\text{ }\ensuremath{\mu}\text{m}$ spot at 12 keV. high-contrast...
Coherent diffraction microscopy using highly focused hard X-ray beams allows us to three-dimensionally observe thick objects with a high spatial resolution, also providing unique structural information, i.e., electron density distribution, not obtained by tomography lenses, atom probe microscopy, or tomography. We measured high-contrast coherent patterns of shape-controlled Au/Ag nanoparticle and successfully reconstructed projection three-dimensional image the single pixel (or voxel) size...
Defect formation energies based on an oxygen vacancy model and a metal-excess in Ni/Mn ordered P4332 disordered Fd3̅m LiNi0.5Mn1.5O4 (LNMO) were evaluated by using ab initio density functional theory (DFT) calculations. The defect energy for the metal excess was lower than that both Fd3̅m. This indicates reactions are unlikely, although interstitial cation occupation at octahedral vacancies occurred LNMO spinel compounds. In addition, corresponding P4332, indicating amount of defects is...
Grain boundary (GB) structure is a critical parameter that significantly affects the macroscopic properties of materials; however, evaluation GB characteristics by modern analytical methods remains an extremely challenging task. In this work, Li+ conductivity degradation at GBs cubic Li7La3Zr2O12 (LLZO) with garnet framework (which represents most promising candidate material for solid electrolytes utilized in all-solid-state batteries) has been investigated various molecular dynamics...
Significance A family of strong yet removable 1- to 2-nm-thick ultrathin monolayer is developed as a corrosion inhibitor for 2-dimensional materials that significantly prolong lifetime while protecting optoelectronic properties in both ambient and harsh chemical or thermal environments. This method low toxicity can be applied arbitrary substrate with no size limit.
Z-scheme water splitting was observed for photocatalyst sheets consisting of narrow-band-gap SrTaO2N (2.1 eV) and La5Ti2Cu0.9Ag0.1O7S5 (1.8 immobilized by filtration their suspension containing conductive carbon nanotubes. Preloading nanotubes on refinement cocatalyst loading allowed the sheet to split with an apparent quantum yield 0.13% at 430 nm, which superior that reported prepared particle transfer method using Au as material. The proposed offers a facile, low-cost approach fabrication...
Alkyl sulfonated polyimides (ASPIs), as alternative polymer electrolytes for fuel cells, are known to exhibit lyotropic liquid crystalline behavior upon water uptake, forming organized lamellar structures and achieving high proton conductivity. Previous experimental studies have shown that ASPIs with planar backbones enhanced conductivity (0.2 S/cm) compared those bent (0.03 S/cm). To explain this difference at the atomistic level, molecular dynamics simulations were conducted using a...
We have recently demonstrated a markedly photosensitive surface relief gratings (SRG) formation in thin films of liquid crystalline azobenzene-containing polymers, which proceeds from cis-rich state the azobenzene [Zettsu et al. Adv. Mater. 2001, 13, 1693; Macromolecules 2004, 37, 8692]. Such polymers exhibited unexpected enhancements sensitivity to light for completion SRG formation, required energy dose being ∼103-fold lower than that other systems widely employed. Here we report detailed...
Higher performance active materials containing cathodes have been strongly required for the achievement of advanced lithium-ion rechargeable batteries. We report formation a densely packed and idiomorphic LiCoO2 crystal layer directly on substrate surface using flux coating with LiNO3–LiOH mixed their applications as an additive-free cathode to enhance gravimetric energy density per single cell well durability. The mechanism nanocrystals from high temperature melt was controlled under...
The surface coating of LiNi<sub>1/3</sub>Co<sub>1/3</sub>Mn<sub>1/3</sub>electrode with 1.1 nm Nb<sub>2</sub>O<sub>5</sub>nanosheet enhanced the high voltage capability and long term stability charged state at 60 °C by reducing contact area between electrode electrolyte.
A new family of azobenzene containing polymer applicable for photoinduced surface relief formation is reported. An acrylate was copolymerized with methacrylate monomers bearing an oligo(ethylene oxide) chain via free radical copolymerization, yielding soft liquid crystalline polymers. These copolymers displayed a smectic crystal phase at room temperature. After preexposure to ultraviolet light, thin films the polymers showed highly sensitive material transfer generate structures. The typical...