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21 巻, 7 号
選択された号の論文の12件中1～12を表示しています
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工藤 正博2000 年 21 巻 7 号 p. 391
発行日: 2000年
公開日: 2007/04/06
ジャーナル フリーPDF形式でダウンロード (61K)
第19回表面科学講演大会論文特集 [I]
論文
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小野寺 理, 坂口 浩司, 下山 雄平2000 年 21 巻 7 号 p. 392-397
発行日: 2000年
公開日: 2007/04/06
ジャーナル フリーIn order to reveal the formation process of a self-assembled monolayer (SAM) of poly-alkylthiophene, a poly-dodecylthiophene film on a gold substrate was analyzed by Fourier-transform infrared spectroscopy. We found that poly-dodecylthiophene successfully formed a SAM on the gold (111) surface. There are two stages for the SAM formation. In the first stage, dodecylthiophene adsorbs continuously on the substrate with the perpendicular orientation until the full coverage is attained. In the second stage, however, the alkyl-chain moiety aligns up to the parallel direction to the substrate surface. Our results indicate that the intramolecular tilt plays a crucial role for the orientation of the thiophene moiety, whereas the intermolecular interaction for the cooperative alkyl-chain alignment.抄録全体を表示PDF形式でダウンロード (349K) -
小林 正, 久保 理, 原田 徹, 柳 正鐸, 片山 光浩, 尾浦 憲治郎2000 年 21 巻 7 号 p. 398-404
発行日: 2000年
公開日: 2007/04/06
ジャーナル フリーUsing scanning tunneling microscopy (STM) the atomic H adsorption on a Ag covered 6H-SiC(0001) surface was investigated. Ag deposition onto the 6H-SiC(0001)√3×√3 surface held at 500oC resulted in the formation of 3×3-Ag and 2D-island regions. STM images of the 3×3-Ag surface revealed one round protrusion per 3×3 unit cell at the empty state, while the protrusion showed a trimer like appearance at the filled state. As a result of atomic H adsorption at 300oC 2D layer of Ag was changed to 3D Ag clusters. Annealing of this surface at 500oC produced again 3×3-Ag and 2D-islands. However, the structures disappeared and the original √3×√3 surface was recovered by further annealing at 600oC. Thus, the reversible transformation from metal 2D layer to 3D clusters induced by atomic H adsorption was directly observed and evidenced in the case of SiC.抄録全体を表示PDF形式でダウンロード (775K) -
久保 利隆, 野副 尚一2000 年 21 巻 7 号 p. 405-412
発行日: 2000年
公開日: 2007/04/06
ジャーナル フリーThe surface morphology of very thin titanium oxide films grown on MgO(100) was studied by use of non-contact atomic force microscopy (AFM). When Ti was deposited, in an O2 atmosphere of 2.6×10-6 Pa, on MgO(100) maintained at 600oC, rectangular structures of spinel nano-crystals were observed. Solid state reactions simultaneously occur during film deposition. When the surface was heated at 900oC in an O2 atmosphere of 2.6×10-6 Pa, a long range stripe structure was observed. The structure is related to the modulated structure characteristics of the Mg2TiO4(100) surface. A titanium oxide-MgO interfacial reaction proceeded by prolonged annealing. The stripe structure disappeared and atomically flat terraces with a step height of 0.2 nm were observed.抄録全体を表示PDF形式でダウンロード (721K) -
中山 健太郎, 小西 健久, 藤川 高志, Peter RENNERT2000 年 21 巻 7 号 p. 413-419
発行日: 2000年
公開日: 2007/04/06
ジャーナル フリーIn theoretical calculation of ARXPS spectra, the plane wave Debye-Waller factor has been mostly used. However, recent theoretical researches have shown the importance of spherical wave Debye-Waller factor in ARXPS spectra. We calculated Ge 3 p ARXPS spectra of Ge(111) surface and studied the effects of the spherical wave Debye-Waller factor. The calculation using the spherical wave Debye-Waller factor explains temperature dependence of the ARXPS spectra. In particular, the spherical wave Debye-Waller factor explains the observed decrease of forward scattering intensity with increasing of temperature below the bulk melting temperature, where the plane wave approximation for the Debye-Waller factor fails to describe this phenomenon. We also estimated the mean square relative displacement around the temperature of high-temperature surface phase transition.抄録全体を表示PDF形式でダウンロード (520K) -
酒井 英樹2000 年 21 巻 7 号 p. 420-425
発行日: 2000年
公開日: 2007/04/06
ジャーナル フリーA method for investigating the acid-base properties of solid surfaces using a small drop of unbuffered solution has been developed. When the aqueous solution comes into contact with a solid having ionizable functional groups on it, hydrogen ions are transferred between the solid and the solution via acid-base reactions. If the solution is a small drop of unbuffered one, it causes pH variation because of the change in the hydrogen ion concentration. The number of transferred hydrogen ions at a certain value of solution pH depends on the acid-base properties of the functional groups. Therefore, by measuring the pH variation of a small fixed-volume drop of unbuffered solution in contact with solids, it will be possible to determine the acid-base properties of solid surfaces.抄録全体を表示PDF形式でダウンロード (484K) -
湊 龍一郎, 江口 豊明, 古田 俊一, 三浦 義弘, 加藤 良造, 森田 英之, 船木 貴博, 佐藤 宏, 大坂 敏明2000 年 21 巻 7 号 p. 426-433
発行日: 2000年
公開日: 2007/04/06
ジャーナル フリーXPS spectra associated with surface core-level shifts (SCLS) for the InSb{111}A, B-(2×2) surfaces are fitted with the curves represented by the Voigt function. While testing as to how the Voigt function changes with detection angle, the Lorentzian width included in the function remains almost unchanged, whereas the Gaussian width becomes broadened with an increase in detection angle. This Voigt function allows to decompose a spectrum of interest into bulk and SCLS component with sufficient intensity, realizing quantitative estimation for the SCLS intensity.抄録全体を表示PDF形式でダウンロード (494K)
ノート
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土佐 正弘, 笠原 章, 金 龍成, 吉原 一紘2000 年 21 巻 7 号 p. 434-437
発行日: 2000年
公開日: 2007/04/06
ジャーナル フリーFor the study and development of surface modification of vacuum materials, we have successfully fabricated a device which can be used to measure the friction force in a vacuum. Surface modifications by mechanical polishing, chemical polishing and electrochemical buffing were carried out on the surfaces of 304 type stainless steel sheet substrates. TiN or a mixture of Cu and BN was coated on the steel using rf magnetron sputtering deposition. Each of the surface modified samples shows a different friction coefficients, reflecting the different surface treatment. The sample coated with the mixture of Cu and BN has the lowest and stable friction coefficients that does not vary with pressure decrease.抄録全体を表示PDF形式でダウンロード (212K) -
加藤 学, 松本 健俊, 久保田 純, 野村 淳子, 廣瀬 千秋, 堂免 一成2000 年 21 巻 7 号 p. 438-439
発行日: 2000年
公開日: 2007/04/06
ジャーナル フリーDecomposition of formic acid on O/Cr(110)-c(3×1) was studied by IRAS. Two types of formates were found: monodentate observed at 1727 and 1382 cm-1 and bidentate at 1567 and 1359 cm-1. Monodentate was decomposed to H2 and CO2 at 442 K, and to CO and H2O at 574 K. Bidentate was decomposed to H2 and CO2 at 608 K.抄録全体を表示PDF形式でダウンロード (165K) -
杉澤 智哉, 三木 裕文, 桂 一匡, 野副 尚一2000 年 21 巻 7 号 p. 440-443
発行日: 2000年
公開日: 2007/04/06
ジャーナル フリーZinc oxide thin films were synthesized on glass substrates using a combination of a metalorganic pulsed molecular beam and an oxygen-radical beam. At temperature between 120 oC and 430 oC, zinc oxide (ZnO) thin films were deposited only when an oxygen-radical beam was irradiated along with DMZ (dimethyl zinc: Zn(CH3)2). The reaction products, CO, CO2 and CH4 were detected while depositing ZnO films.抄録全体を表示PDF形式でダウンロード (270K) -
寺岡 有殿, 吉越 章隆, 佐野 睦2000 年 21 巻 7 号 p. 444-447
発行日: 2000年
公開日: 2007/04/06
ジャーナル フリーThe influence of translational energy of incident O2 molecules on Si(001) active oxidation process was investigated by detection of scattered O2 and desorbed SiO molecules. The translational energy of O2 molecules was controlled up to 3 eV by a supersonic seed beam technique using a high temperature nozzle. The O2 reflectivity and the SiO desorption rate were abruptly changed at about 700oC with the translational energy larger than 2 eV. The phenomenon may be attributed to the direct oxidation of silicon dimers backbonds followed by SiO desorption.抄録全体を表示PDF形式でダウンロード (308K)
談話室
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越川 孝範2000 年 21 巻 7 号 p. 448
発行日: 2000年
公開日: 2007/04/06
ジャーナル フリーPDF形式でダウンロード (93K)
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