A5103105505- Advanced Chemical Physics Studies
- Electron and X-Ray Spectroscopy Techniques
- nanoparticles nucleation surface interactions
- Graphene research and applications
- Surface and Thin Film Phenomena
- Carbon Nanotubes in Composites
- Catalytic Processes in Materials Science
- Nuclear Physics and Applications
- Nuclear Engineering Thermal-Hydraulics
- Gas Sensing Nanomaterials and Sensors
- Calibration and Measurement Techniques
- Quantum, superfluid, helium dynamics
- Molecular Junctions and Nanostructures
- Photocathodes and Microchannel Plates
- Advancements in Battery Materials
- Advanced Materials Characterization Techniques
- Amyloidosis: Diagnosis, Treatment, Outcomes
- Hydrogen Storage and Materials
- Thermal Analysis in Power Transmission
- High voltage insulation and dielectric phenomena
- Vector-Borne Animal Diseases
- Radioactive contamination and transfer
- Sarcoidosis and Beryllium Toxicity Research
- Marine and Coastal Research
- Spacecraft and Cryogenic Technologies
Yokohama City University
1998-2023
Aichi Prefectural University
2020
Japanese Red Cross Society, Japan
2013
Tachi S (Japan)
2005
Tokyo University of Science
1993-1995
RIKEN
1991
Two-photon photoemission was observed from molecularly adsorbed NO on Cu(111) at 110 K. Excitation and were performed with a laser light of 5 ns duration in the photon energy range 3.8 to 4.5 eV. The NO-induced feature found be composed two components: one attributed sequential two-photon ground state NO, other one-photon negative-ion which formed by hot electrons Cu substrate. intensity resonantly enhanced 3.98±0.05 dependence resonance excitation excited NO. Width curve 0.3 eV, suggesting...
Human T lymphotropic virus type I (HTLV-I)-associated myelopathy/tropical spastic paraparesis (HAM/TSP) is a chronic myelopathy characterized by motor dysfunction of the lower extremities and urinary disturbance. Immunomodulatory treatments are main strategy for HAM/TSP, but several issues associated with long-term treatment. We conducted clinical trial prosultiamine (which has apoptotic activity against HTLV-I-infected cells) as novel therapy in HAM/TSP patients. enrolled 24 patients this...
Transmission electron microscopy (TEM) technique was used to investigate the structure of carbon nanowalls (CNWs). The TEM observation clearly indicated existence bended graphene in boundary regions between crystallites CNWs. According this result, first-principles calculation employed for coronene molecule as model region CNWs, elucidate mechanism hydrogen adsorption energies onto both on-top and hollow sites become greater bending angle increases, because electronic atom at site changes...
The deuterium edge-termination effects on the electronic states of nanographene Pt(111) have been investigated by three-photon photoemission and ultraviolet photoelectron spectroscopy. antibonding ${\ensuremath{\sigma}}^{*}$ state at $\overline{\ensuremath{\Gamma}}$ with average diameter $\ensuremath{\sim}60 \mathrm{\AA{}}$ is found $3.87\ifmmode\pm\else\textpm\fi{}0.05 \mathrm{eV}$ above Fermi level. Although both occupied $\ensuremath{\pi}$ 8.1 eV show bulklike behavior, they are strongly...
Design and performance of a newly developed scanning photoelectron microscope based on focused coherent vacuum ultraviolet (VUV) light are described. The VUV at 118 nm wavelength (10.48 eV photon energy) was generated by the frequency upconversion pulsed YAG laser light. is characterized its high spatial resolution few microns, which consistent with high-energy better than 200 meV. provided focusing nearly to diffraction limit, while energy resolved efficiency time-of-flight (TOF) analyzer....
In this paper we performed ultraviolet photoelectron spectroscopy (UPS) measurements to obtain sample temperatures of a single crystal surface Cu(110) in ranging from 10 K 300 K. The Fermi-Dirac distribution function was applied the high energy spectral edge distribution. data then adapted Gaussian which represents instrumental resolution. difference between measured and expands at higher temperature range. present experiment results were consistent with previous theoretical work on...
We devised a new method of determining the temperatures materials with their electron-energy distributions. The Fermi–Dirac distribution convoluted linear combination Gaussian and Lorentzian distributions was fitted to photoelectron spectrum measured for Au(110) single-crystal surface at liquid N2-cooled temperature. fitting successfully determined surface-local thermodynamic temperature energy resolution simultaneously from spectrum, without any preliminary results other measurements. 99 ±...
カーボンナノウォール(CNW)の構造を透過型電子顕微鏡(TEM)で観測し，CNWの結晶子間の境界領域に折れ曲がったグラファイト構造があることがわかった．CNWの電子構造を紫外光電子分光(UPS)で測定し，高配向性グラファイト(HOPG)と比較した．HOPGと同様にCNWでも層間バンドが観測された．一方，カーボンナノチューブに見られるσ-π混成バンドが観測された．昇温脱離法(TPD)の測定から，重水素がCNWの主に境界領域に吸着することがわかった．CNWの境界領域の1つのモデルとして折れ曲がったコロネン分子を用いて水素吸着に関して第一原理計算をおこなった．オントップサイトとホローサイトどちらも折れ曲げ角が大きくなるほど水素の吸着エネルギーが大きくなった．NBO解析から吸着サイトの炭素の結合がsp2からsp3に変化するためだとわかった．
症例は29歳男性である．2008年に肺サルコイドーシスを指摘された．2010年10月下旬に38°C台の発熱，頭痛が出現した．11月より膿疱性乾癬の診断で皮膚科へ入院したが，発熱，頭痛が改善せず当科に転科した．頭部MRIで脳底部を中心に微小造影結節をみとめた．脳脊髄液検査で細胞数，蛋白が増加し，糖は7 mg/dlと著明な低値を示した．抗結核薬，ステロイドパルス療法をおこなったが臨床症状，検査値ともに改善しなかった．髄膜生検で髄膜播種性サルコイドーシスと診断した．プレドニゾロン60 mg/日を開始し，症状は著明に改善した．髄膜播種性サルコイドーシスでも髄液糖が著明に低下する可能性に留意すべきである．
To determine the thermodynamic temperature of a solid surface from electron energy distribution measured by photoelectron spectroscopy, it is necessary to accurately evaluate broadening spectrum and investigate its dependence. Broadening functions in Au(110)’s near Fermi level were estimated successfully using relationship between Fourier transform convolution integral. The could simultaneously reduce noise when function was derived. derived form Gaussian, whose width depended on sample...
The Fermi–Dirac (FD) distribution describes the occupancy of electronic states in a material at thermal equilibrium as function thermodynamic temperature. By measuring electron energy using photoelectron spectroscopy, we can obtain FD and determine This study proposes method for determining temperature, which involves calculating area ratio between spectra above below Fermi level. thermometric technique offers several advantages, including surface selectivity, noncontact measurement,...
The Fermi–Dirac (FD) distribution describes the occupancy of electronic states in a material at thermal equilibrium as function thermodynamic temperature. By measuring electron energy using photoelectron spectroscopy, we can obtain FD and determine This study proposes method for determining temperature, which involves calculating area ratio between spectra above below Fermi level. thermometric technique offers several advantages, including surface selectivity, noncontact measurement,...
A novel retarding type electron energy analyzer implementing an electrostatic lens system to achieve a high resolution sufficient measure thermodynamic temperature has been investigated based on the trajectory analysis. The of depends linearly with modulus 0.05 %. voltages be applied electrodes in are found controllable against voltage. threshold energies, whose effect can excluded practical measurements.