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molecules to step edges of the Si(110)-16
2 single domain surfaceYokoyama, Yuta; Yamada, Yoichi*; Asaoka, Hidehito; Sasaki, Masahiro*
Journal of Physics; Conference Series, 417, p.012036_1 - 012036_6, 2013/03
Times Cited Count：1 Percentile：38.44(Materials Science, Coatings & Films)The Si(110)-162 reconstructed structure can be a superior template for 1-D nanostructures. However, the controlled nanostructure using this surface has not been fabricated yet. In this study, we have investigated the adsorption of C on the Si(110)-162 surface at various surface temperatures, and found that the C preferable adsorption site is remarkably changed, depending on the surface temperature. The obtained results indicate the possibility that the organic 1-D nanostructure can be fabricated on the Si(110)-162 surface by controlling the surface temperature.
Taguchi, Tomitsugu; Fazle Kibria, A. K. M.*; Shamoto, Shinichi
Journal of Physics; Conference Series, 417, p.012037_1 - 012037_6, 2013/03
Times Cited Count：3 Percentile：67.45(Materials Science, Coatings & Films)The different behaviour between morphology changes of as-received mult-walled carbon nanotube (MWCNT) and MWCNT with SiC coating was investigated by the electron irradiation. High resolution-TEM images revealed that the deformation and bending of graphitic shells occurred in both as-received MWCNT and MWCNT with SiC coating by electron irradiation. Both of deformation and bending curvature in CNT part of MWCNT with SiC coating were smaller than those in as-received MWCNT. The electron irradiation began changing the outer and inner diameters of as-received MWCNT within 3 minutes exposure, whereas it began changing their diameters changes of MWCNT with SiC coating after 10 minutes exposure. The outer diameter of as-received MWCNT increased up to irradiation time of 9 min and then decreased rapidly. On the other hand, the outer diameter of MWCNT with SiC coating increased monotonically up to irradiation time of 50 min and then was saturated in the MWCNT with SiC coating. It might become hard to knock C atoms out from both inner and outer surfaces of CNT part by coating with SiC layer on MWCNT. These results lead that the morphology stability of MWCNT against electron irradiation is improved by coating with the SiC layer on MWCNT.
incident translational energy dependenceInoue, Keisuke*; Teraoka, Yuden
Journal of Physics; Conference Series, 417, p.012034_1 - 012034_6, 2013/03
Times Cited Count：3 Percentile：67.45(Materials Science, Coatings & Films) molecular beam as observed by synchrotron radiation photoemission spectroscopyTeraoka, Yuden; Jinno, Muneaki*; Harries, J.; Yoshigoe, Akitaka
Journal of Physics; Conference Series, 417, p.012031_1 - 012031_7, 2013/03
Times Cited Count：1 Percentile：38.44(Materials Science, Coatings & Films)Yoshimoto, Masahiro; Saha, P. K.; Yamazaki, Yoshio; Kawase, Masato; Saeki, Riuji; Hayashi, Naoki; Yamamoto, Kazami; Hotchi, Hideaki; Ishiyama, Tatsuya; Kinsho, Michikazu; et al.
Journal of Physics; Conference Series, 417, p.012073_1 - 012073_6, 2013/03
Times Cited Count：4 Percentile：75.62(Materials Science, Coatings & Films)The HBC foil are installed in the J-PARC RCS for the charge-exchange H
beam injection. In order to examine the characteristics of the HBC foils, beam studies for the HBC foil were carried out from the viewpoint of foil's life time and the beam survival rate due to foils. According to the compromise between charge-exchange efficiency and foil scattering beam loss, we optimized the foils thickness for user operation. The long-term observation during the user operation as well as the HBC foil endurance test for its life time evaluation was carried out. Even after one year was operation, there was no deterioration of the stripping foil.
Koswattage, K.; Shimoyama, Iwao; Baba, Yuji; Sekiguchi, Tetsuhiro; Nakagawa, Kazumichi*
no journal, ,
Boron nitride (BN) nanotubes (BNNTs) have attracted much research attention as a promising candidate for hydrogen storage. One of the most basic arguments is the site dependence of atomic hydrogen adsorption. In this work, we investigated the site dependence of atomic deuterium adsorption on a thin film of BN as a representative system for BN nanomaterials, using NEXAFS and XPS. A BN thin. The XPS spectrum of B 1s showed a prominent shoulder on the low binding energy side of the main peak after deuteration, while the N 1s spectrum showed only peak broadening at the high binding energy side. In the PSID measurements, it was observed that there was a clear resonance peak at the B site but no resonance at the N site. The experimental results of NEXAFS and XPS were analyzed by the DV-X
method with core-hole effect. Finally, we conclude that deuterium (hydrogen) atoms are preferentially adsorbed on the B sites of BN materials, via a single hydrogen adsorption model.
