A5027823068- Semiconductor materials and devices
- Metal and Thin Film Mechanics
- Copper Interconnects and Reliability
- Electron and X-Ray Spectroscopy Techniques
- ZnO doping and properties
- Surface and Thin Film Phenomena
- Molecular Junctions and Nanostructures
- Machine Learning in Materials Science
- Electronic and Structural Properties of Oxides
- Catalytic Processes in Materials Science
- Semiconductor materials and interfaces
- Force Microscopy Techniques and Applications
- Integrated Circuits and Semiconductor Failure Analysis
- Manufacturing Process and Optimization
- Advanced Materials Characterization Techniques
- Advanced Chemical Physics Studies
- Metallurgical and Alloy Processes
- Advanced Memory and Neural Computing
- Intermetallics and Advanced Alloy Properties
- Ion-surface interactions and analysis
- Nuclear Physics and Applications
- Advanced ceramic materials synthesis
- Ferroelectric and Negative Capacitance Devices
- nanoparticles nucleation surface interactions
- Nuclear physics research studies
National Institute for Materials Science
2015-2025
National Institute of Technology, Kagoshima College
2024
National Institute of Technology, Suzuka College
2024
Instituto de Ciencia de Materiales de Sevilla
2017
Saitama University
2008-2011
SPring-8
2010
Institute for Materials Research, Tohoku University
2003
Institute of Metal Research
1990-2001
Japan Organization for Metals and Energy Security (Japan)
1992-2000
National Institute of Standards and Technology
1993-1996
This paper introduces and describes a learning system for analyzing devices in virtual world points out its significance current research collaboration. Now we are Society 5.0, so daily problems should be solved by IoT (Internet of Things) with mutual collaboration without borders. The authors need to collaborate each other among remote organizations different nations. For such situations, establish the which would lead an actual sharing future. In this paper, proposed concept metaverse is...
Reaction cross sections (sigma(R)) for 19C, 20C and the drip-line nucleus 22C on a liquid hydrogen target have been measured at around 40A MeV by transmission method. A large enhancement of sigma(R) compared to those neighboring C isotopes was observed. Using finite-range Glauber calculation under an optical-limit approximation rms matter radius deduced be 5.4+/-0.9 fm. It does not follow systematic behavior radii in carbon with N < or = 14, suggesting neutron halo. found analysis based...
Biofilms have caused many problems, not only in the industrial fields, but also our daily lives. Therefore, it is important for us to control them by evaluating properly. There are instrumental analytical methods available formed biofilm qualitatively. These include use of Raman spectroscopy and various microscopes (optical microscopes, confocal laser scanning electron transmission atomic force etc.). On other hand, there some biological methods, such as staining, gene analyses, etc. From...
In marine environments and water systems, it is easy for many structures to form biofilms on their surfaces be deteriorated due the corrosion caused by biofilm formation bacteria. The authors have investigated antibacterial effects of metallic elements in practical steels so far solve food-related problems, using Escherichia coli Staphylococcus aureus. However, from viewpoint material deterioration bacteria antifouling measures, we should consider behavior as aggregate rather than individual...
Transition-metal carbides and nitrides (TMCs TMNs) are promising electrode materials for various electronic devices such as metal-oxide-semiconductor field-effect transistors metal-insulator-metal capacitors. In this paper, the work functions of TMCs TMNs discussed systematically. Based upon origin function, effect transition metal species by different periodic table groups is explained, compared with same metal, carbon or nitrogen vacancies discussed. addition, a method to estimate generic...
Abstract The single crystals of NiPc(SbF6)0.5 and NiPc(AsF6)0.5 were prepared by means an electrochemical method. electrical, magnetic, optical, structural properties these examined. These are isostructural to each other, exhibit a metallic behavior at least above 200 K. g-values the ESR signals remarkably depend upon temperature. By aid low temperature experiments XANES reflectance spectrum, dependence is explained model based on interaction between small amount local spins Ni atoms...
We studied surface segregation of substrate metal on the top a deposited film in vacuum. A metallic polycrystalline submicron or micrometer thickness was and heated an Auger electron spectroscopy (AES) x-ray photoelectron (XPS) apparatus. The composition monitored during heating. specimen until observed concentration became saturated. depth profile obtained by measuring AES/XPS with Ar ion etching. Al, Ti, Cr, Ni, Cu, Nb, Fe were used as materials Zr, materials. More than 25 combinations...
Abstract The band alignment at the interface between Pt and O‐terminated ZnO(000 1 ) was investigated by depositing films on ZnO using X‐ray photoelectron spectroscopy ultra violet in an ultrahigh vacuum system. Angle‐resolved measurement showed bent down 0.06 eV surface. binding energy of Zn 2p doublet shifted toward higher values 0.37 when deposited ). work function 4.08 valence maximum measured UPS clean surface 2.82 eV. As a result, Schottky barrier height Pt/ZnO(000 0.72 this...
The concept of a 3D experience using the Google Cardboard VR headset and cell phones is discussed in terms its educational effect. As for video component, content on YouTube as 360°VR used. following three topics are included this project: skydiving, lunar exploration, deep-sea exploration. In some organizations, groups faculty student members asked to participate such an activity phone along with headset. authors plan analyze results 5-point scale. A similar experiment already progress. It...
Epitaxial ultrathin alumina films were grown on a Cu−9 at. % Al(111) substrate by selective oxidation of Al in the alloy ultrahigh vacuum. The photoelectron spectra 2p and valence band measured situ during oxidation. By analyzing multiple peaks 2p, interface atomic structure was discussed. energy difference between Fermi level maximum (band offset) obtained. relation offset compared with reported first-principles calculations. A novel method for controlling proposed.
We have applied a combinatorial technique to fabricate work function (WF) tuned Pt-W alloy films and used the as metal electrodes for HfO2∕SiO2∕Si capacitors. As ratio, RPt, of Pt W changes from 0 1, WF value varies continuously 4.7 5.5 eV. This tunability enables us systematically investigate effect variation on electrical properties. After forming gas annealing process, values flatband voltage (Vfb) capacitance-voltage properties are almost constant, regardless variation, because oxygen...
One- and two-neutron removal reactions from 19C 20C have been studied using a liquid-hydrogen target at 40A MeV. A small cross section has observed in the one-neutron reaction 20C. The inclusive sections are compared with theoretical calculated by shell model spectroscopic factors Glauber-model single-particle sections. momentum distributions also those continuum-discretized coupled-channel methods. Good consistency between theory experiment is shown 19C. However, our calculation fails to...
Cu-based alloys have been used for electric cables long time. In the field of microelectronics, Al had electrical wiring. However, it became clear that electromigration occurs in causes breaking wires minute wirings. Due to this problem, Cu wiring is most advanced microprocessors. metal more corrosive than and with a small amount expected solve problems both on corrosion. The initial stage corrosion oxygen adsorption. We studied surface segregation Cu–9% Al(111) adsorption with/without...
Abstract An alloy of Cu–9at.%Al(111) has been oxidized in a low‐energy electron diffraction (LEED)/AES and scanning AES instrument at elevated temperatures. Dosing with 1300 L oxygen 995 K gives rise to well‐ordered oxide layer formation on the Cu–9at.%Al alloy. The structure ordered confirmed by LEED is ( $7/\sqrt{3} \times 7/\sqrt{3}$ ) R30°. chemical state was Al 2 O 3 . morphology surface observed SEM revealed flat growth triangular defects same orientation. possible epitaxy between...