A5054728836- Semiconductor Lasers and Optical Devices
- Structural Load-Bearing Analysis
- Photonic and Optical Devices
- Optical Network Technologies
- Microstructure and Mechanical Properties of Steels
- Engineering Structural Analysis Methods
- Advanced Photonic Communication Systems
- Polyoxometalates: Synthesis and Applications
- Metallurgy and Material Forming
- Fluoride Effects and Removal
- Nanomaterials for catalytic reactions
- Semiconductor Quantum Structures and Devices
- Metal and Thin Film Mechanics
- Bone and Dental Protein Studies
- Fish Ecology and Management Studies
- Chemistry and Chemical Engineering
- Magnetic Properties of Alloys
- Geotechnical Engineering and Underground Structures
- Fusion materials and technologies
- Quantum Dots Synthesis And Properties
- Catalysis and Hydrodesulfurization Studies
- Iron oxide chemistry and applications
- Fish Biology and Ecology Studies
- Advanced Fiber Laser Technologies
- Nuclear Materials and Properties
Nova Southeastern University
2023-2024
Hokkaido University
2000-2024
Tokyo University of Agriculture and Technology
2018-2024
Aichi Institute of Technology
2024
Waseda University
2024
Tokyo Medical and Dental University
2021-2023
Wakayama Medical University
2021
Saitama University
2020
Murayama Medical Center
2020
National Hospital Organization
2020
Surface topography has vital roles in cellular response. Here, to investigate the mechanism behind response surface topography, we prepared honeycomb (HC)-patterned films from poly(ε-caprolactone) (PCL) with micropatterned by casting a polymer solution of water-immiscible solvent under high humidity. We characterized adsorption fibronectin (Fn) on film using atomic force microscopy (AFM) and confocal laser scanning (CLSM). The porcine aortic endothelial cells (PAECs) adsorbed Fn molecules...
Perfluorooctanoic acid (PFOA) is an artificial fluorinated organic compound that has generated increased public attention due to its potential health hazards. Unsafe levels of PFOA exposure can affect reproduction, growth and development. During tooth enamel development (amelogenesis), environmental factors including fluoride cause hypoplasia. However, the effects on ameloblasts formation remain largely unknown. In present study we demonstrate several PFOA-mediated cell death pathways...
Synchronous parallel optical-fiber transmission is an attractive method for providing increased interconnection throughput and higher density in advanced information systems. Skew suppression (reducing delay time variation), error-free fully DC-coupled data capability, compactness, low power consumption of modules are important requirements. In order to meet these requirements, we developed optical subsystem interconnections using long-wavelength laser diode arrays single-mode fiber arrays....
Fluoride is widely used in dentistry for its caries prevention. To reduce dental caries, the optimal fluoride concentration of public water supplies United States 0.7 ppm. However, excessive systemic consumption can lead to dental/enamel fluorosis. Numerous studies have explored effects on enamel and enamel-forming cells. research fluoride's impact dentine limited, particularly effect structure dentine-pulp complex. Therefore, this study aimed identify how affects microstructure using an...
We present a detailed study of the polarization properties reflective fiber amplifier composed circulator, normal single-mode Er-doped and Faraday rotator mirror. The can preserve an arbitrary input state regardless any external perturbations, is completely free from effects. effect imperfections mirror also discussed. Finally, we demonstrate experimentally polarization-stability its ability to compensate mode dispersion both in circulator fiber.
Abstract Understanding the surface chemistry of organic‐inorganic interfaces is a prerequisite for design novel nanohybrid materials. Herein, we disclose that phosphonate ligands tightly bind to TiO 2 nanoparticle surfaces and cannot be displaced even through repetitive decantation by methanol. However, 1D 1 H solution NMR analyses unambiguously show they can effectively exchanged other phosphonic acids. A key enabler successful measurements synthesis acid ligand stabilizes nanoparticles in...
The mechanical property, microhardness, is evaluated in dental enamel, dentin, and bone oral disease models, including fluorosis periodontitis. Micro-CT (µCT) provides 3D imaging information (volume mineral density) scanning electron microscopy (SEM) produces microstructure images (enamel prism lacuna-canalicular). Complementarily to structural analysis by µCT SEM, microhardness one of the informative parameters evaluate how changes alter properties. Despite being a useful parameter, studies...
Abstract Surface ligands are essential tools for the stabilization of colloidal nanoparticles (NPs) in solvents. However, knowledge regarding effects ligand shell, especially length, is insufficient and controversial. Here we demonstrate solution‐based experiments on n‐ alkylphosphonate‐capped TiO 2 NPs to investigate length solution temperature stability. A robust ligand‐exchange process achieved that draws free impurities away from solution. In case 8 nm anatase toluene, dodecylphosphonate...
Despite the fact that leaf decomposition constitutes an important function in rivers, how multiple environmental stressors simultaneously affect it remains largely unknown. This study investigated interactive effects of fine sediments (particle size: <2 mm; experimentally manipulated) and a specific nutrient (i.e., nitrate) on subsurface (hyporheic) litter rate macroinvertebrates gravel-bed river its tributary eastern Hokkaido, Japan. The experiment was conducted by measuring dried Alnus...
Organic ligands on the surface of nanocrystals (NCs) are extremely important in influencing various physical properties, such as dispersibility, electrical and optical properties. Recent studies have revealed that a slight difference molecular structure aliphatic organic significantly affects dispersibility NCs. On other hand, effects excited-state dynamics NCs remain elusive. In this study, we synthesized series colloidal ZnO capped with different alkyl phosphonic acids investigated their...
Abstract For most nanoparticle applications, understanding the “strength” of anchoring events at surface is necessary to design effective ligand exchange processes. The present report demonstrates ability direct ordering phosphonic acid, catechol, and carboxylic acid as groups for iron oxide nanoparticles, enabled by a stepwise phase‐transfer strategy. A key feature was use cyclohexane‐based thermomorphic system that provided unique homogeneous field ligand‐exchange processes, where...
Respiratory rehabilitation reduces breathlessness from patient with respiratory dysfunction. Chest expansion score, which represents the circumference magnitude of thoracic cage, is used for a target when treating patients disease. However, it often difficult to understand changes in status and be motivated therapy continuously. We developed new measurement system biofeedback named BREATH shows chest scores real time. The purpose this study was determine reliability validity novel advance...
A high-power laser in the 780-nm wavelength region was realized by introducing an AlGaAs ternary alloy quantum-well structure. Since there is no axial structure, high reproducibility expected. By applying structure to wells, a reduction operation current of which oscillates can be achieved. optical power density direction perpendicular junction plane examined lessen facet degradation. Investigations focus on characteristic temperature and catastrophic damage (COD) level. It found that triple...
The hollow circular cylinder specimen of Cr-Mo steel with 0.20 mass% C was carburized in carrier gas and quenched oil bath. After quenching, the surface residual stress distributions radial, axial hoop directions were measured experimentally by x-ray as a function distance from surface. case depth about 0.8 mm. Diffraction Fe-211 Cr-Kα radiation used to minimize effect carbon content gradient on nonlinearity 2θ-sin 2 ψ, because effective penetration 5.8 μm at sin ψ=0. hardened layer...
Nanoparticles (NPs) are inherently prone to aggregation and loss of their size-derived properties, thus it is essential enhance dispersibility for applications. In less polar solvents, organic ligands containing oleyl groups known as good dispersants due inefficient shell packing inhibition chain-chain crystallization well interdigitation between adjacent NPs. However, reagents with structures, such oleic acid oleylamine, can contain trans double bonds saturated impurities, which might...