A5067615629- Electron and X-Ray Spectroscopy Techniques
- Analytical chemistry methods development
- Ion-surface interactions and analysis
- Lubricants and Their Additives
- Asymmetric Synthesis and Catalysis
- Diamond and Carbon-based Materials Research
- Synthetic Organic Chemistry Methods
- Corrosion Behavior and Inhibition
- Metal and Thin Film Mechanics
- X-ray Spectroscopy and Fluorescence Analysis
- Mass Spectrometry Techniques and Applications
- Force Microscopy Techniques and Applications
- Nuclear Materials and Properties
- Analytical Chemistry and Sensors
- Tribology and Wear Analysis
- Recycling and Waste Management Techniques
- Fusion materials and technologies
- Polymer crystallization and properties
- Radioactive contamination and transfer
- Advanced Synthetic Organic Chemistry
- Polymer Science and PVC
- Polymer Nanocomposites and Properties
- Advancements in Photolithography Techniques
- Advanced Combustion Engine Technologies
- Advanced Algebra and Geometry
Keio University
2025
Toyota Central Research and Development Laboratories (Japan)
2001-2019
Toyota Motor Corporation (Switzerland)
1997-2013
Rikkyo University
1997-2000
The total synthesis of isodaphlongamine H based on a lactam strategy, which enables quick access to complex cyclic amines, is described. strategy begins with alkylation chiral and subsequent N‐oxidation via an imino ether afford the N‐hydroxylactam. For key transformation functionalize amide carbonyl, iridium‐catalyzed reductive [3+2] cycloaddition N‐hydroxylactam provides tricyclic isoxazolidine in one‐pot process. After coupling reaction allylic silane fragment, accomplished through...
Abstract The adsorption of phosphate‐type lubricant additives on ferrous materials has been investigated by time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS) friction surfaces. Eight kinds model compounds were used for the tests. In ToF‐SIMS spectra surfaces after washing with hexane, Fe‐alcoholates detected as reaction products alcohol units and material, Fe‐polyphosphate was a product phosphate unit material. quasi‐molecular ions compounds, which suggest existence physical...
We investigated reduction of the matrix effect in time-of-flight secondary ion mass spectrometry (TOF-SIMS) analysis by deposition a small amount metal on sample surfaces (metal-assisted SIMS or MetA-SIMS). The used was silver, and substrates were silicon wafers as electroconductive polypropylene (PP) plates nonelectroconductive substrates. Irganox 1010 silicone oil these analyzed TOF-SIMS before after silver deposition. Before deposition, yields from substances wafer PP plate quite...
Abstract The adsorption of model compounds friction modifiers on ferrous materials has been investigated by time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS). Eleven kinds compounds, including carboxylic acids, alcohols, amines and esters, were subjected to lubrication tests. Six among these—carboxylic acids some esters—showed good lubricity. ToF‐SIMS spectra the surfaces after being washed with hexane showed that formed Fe‐carboxylates reacting material, esters both Fe‐alcoholates...
To investigate the nuclear transmutation of Cs into Pr reported in this journal by Iwamura and coworkers, we have measured amount atoms range as low ∼1×10 10 cm -2 using inductively coupled plasma mass spectrometry for Cs-ion-implanted Pd/CaO multilayer complexes before after deuterium permeation. The was initially at most 2.0×10 11 it increased up to 1.6×10 12 increase could be explained neither permeation-stimulated segregation impurities nor external contamination from experimental...
Chemical structural analysis of tape-stripped surfaces at dark spots growing in organic electroluminescent (EL) devices during exposure to the atmosphere was done by time-of-flight secondary ion mass spectrometry (OF-SIMS). The EL consist indium-tin-oxide, triphenylamine-tetramer, tris(8-hydroxyquinoline)aluminum (Alq3), and a Mg-Ag cathode deposited order under vacuum on glass substrate. It found that interface between Alq3 layer exposed as result tape-stripping, where large number were...
A new method for silanol analysis by derivatization XPS has been presented. The feature of this is to use tridecafluoro-1,1,2,2-tetrahydrooctyl dimethylchlorosilane (FOCS) the reagent. We have applied surface silicon containing diamond like carbon (DLC-Si) coatings and found that groups on DLC-Si reduce friction coefficient.
An effect of measurement conditions on the depth resolution was investigated for dual‐beam time flight‐secondary ion mass spectrometry profiling delta‐doped‐boron multi‐layers in silicon with a low‐energy sputter (200 eV – 2 keV O + ) and high‐energy primary (30 Bi ). The evaluated by intensity ratio first peak subsequent valley B profile each condition. In case sputtering low energy 250 eV, found to be affected damage (Bi correlated current density ion. From profiles implanted remaining at...
Abstract The adsorption behaviour of a mixture lubricant additives onto ferrous materials has been investigated by time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS). Six mixtures were made mixing one two types phosphites and three friction modifiers for subjecting to lubrication tests. By ToF‐SIMS analysis the surfaces tested with these mixtures, following conclusions obtained. Adsorption palmitic acid glycerol monooleate was inhibited in presence phosphites, but oleyl amine not...
Attenuated total reflection surface-enhanced infrared absorption microspectroscopy (micro-ATR-SEIRA) was developed for the identification of sub-mm size and nm-thick layers on material surfaces by using gold island films deposited surface micro-ATR crystals. A thin layer triphenyl phosphate (TPP) a poly(tetrafluoroethylene) (PTFE) membrane filter used to evaluate enhancement bands. Three types crystals: diamond, silicon, germanium, were evaluated. Diamond gave greatest with 12 nm thick film....
6-Methylbicyclo[4.3.0]non-8-en-7-one was synthesized by FeCl 3 -induced tandem Nazarov cyclization–rearrangement of 4-cyclopentylidene-5-trimethylsilylpent-1-en-3-one, via 7-methyl-1-methylenespiro[4.4]nonan-2-one as intermediate.