著者

森本 吉春 藤垣 元治 柾谷 明大

出版者

一般社団法人 日本真空学会

雑誌

Journal of the Vacuum Society of Japan (ISSN:18822398)

巻号頁・発行日

vol.54, no.1, pp.32-38, 2011 (Released:2011-03-11)

参考文献数

36

被引用文献数

1 10

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Moire method is a useful method to measure deformation and strain distribution of structures. Moire fringe patterns are analyzed quantitatively and speedy by image processing using a computer. In this paper, the theory of moire method and sampling moire method is introduced. Since the sampling moire method is useful to analyze phases of a moire fringe and a grating from one image of a grating pattern, it is possible to analyze dynamic deformation accurately. Some applications of the sampling moire method to displacement measurement of a beam, and shape and strain measurement of a rubber structure are shown.

著者

稲吉 さかえ

出版者

一般社団法人 日本真空学会

雑誌

Journal of the Vacuum Society of Japan (ISSN:18822398)

巻号頁・発行日

vol.57, no.8, pp.299-302, 2014 (Released:2014-08-25)

参考文献数

13

被引用文献数

2

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The gas pressure of a vacuum system is determined by the outgassing from its surfaces. Outgassing can be categorized into desorption, diffusion and permiation. In this text, the mechanisms of these modes, as well as the countermeasures for them, are discussed. Some methods to evaluate the outgassing rate are also introduced.

著者

西嶋 光昭

出版者

一般社団法人 日本真空学会

雑誌

真空 (ISSN:05598516)

巻号頁・発行日

vol.49, no.4, pp.248-253, 2006 (Released:2007-04-12)

参考文献数

42

著者

近藤 剛弘 中村 潤児

出版者

一般社団法人 日本真空学会

雑誌

Journal of the Vacuum Society of Japan (ISSN:18822398)

巻号頁・発行日

vol.51, no.4, pp.245-249, 2008 (Released:2008-06-04)

参考文献数

19

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Significant improvement of the Pt-electrode in polymer electrolyte fuel cells has been found by replacing the support material from carbon black to multi-walled carbon nanotube (CNT). In order to explore the origin for the better performance of the Pt/CNT catalysts, model studies using Pt nano-particles deposited on a highly oriented pyrolytic graphite (HOPG) have been carried out as a surface science approach. It is suggested that monolayer of Pt nano-particles show a quite different electronic nature, leading to very high catalytic activity.

著者

森田 清三

出版者

一般社団法人 日本真空学会

雑誌

Journal of the Vacuum Society of Japan (ISSN:18822398)

巻号頁・発行日

vol.51, no.12, pp.769-770, 2008 (Released:2009-01-15)

著者

中村 一男

出版者

一般社団法人 日本真空学会

雑誌

真空工業 (ISSN:18837174)

巻号頁・発行日

vol.1, no.1, pp.3-7, 1954 (Released:2009-09-29)

参考文献数

3

著者

深谷 有喜

出版者

一般社団法人 日本真空学会

雑誌

Journal of the Vacuum Society of Japan (ISSN:18822398)

巻号頁・発行日

vol.59, no.2, pp.35-39, 2016 (Released:2016-03-18)

参考文献数

25

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Total-reflection high-energy positron diffraction (TRHEPD) is a surface-sensitive tool owing to the total reflection of positrons. Since the sign of the crystal potential energy for positrons is positive, opposite to that for electrons, the positron beam at a grazing incidence is totally reflected at a crystal surface. The penetration depth of the positron beam in the total reflection region is estimated to be about a few Å, which corresponds to the thickness of 1-2 atomic layers. Thus, the positron beam in the total reflection region sees only the topmost surface layer of the crystal. Slightly over the critical angle for the total reflection, the positon beam also sees the underlying surface layer. Adjusting the glancing angle of the incident positron beam, the diffraction intensity selectively contains information about the topmost and the underlying surface layers without any effect from the bulk. Therefore, the TRHEPD is very useful for structure determinations of crystal surface and two-dimensional atomic sheet adsorbed on the substrate. In this paper, we will show the surface-sensitivity of the TRHEPD. Shown is also the recent result of silicene, two-dimensional atomic sheet of silicon, using the TRHEPD.

著者

齊藤 芳男

出版者

一般社団法人 日本真空学会

雑誌

Journal of the Vacuum Society of Japan (ISSN:18822398)

巻号頁・発行日

vol.53, no.9, pp.511-514, 2010 (Released:2010-10-26)

参考文献数

6

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Some historical background concerning studies on residual water molecules in vacuum chambers and devices are introduced. The effect of adsorbed water molecules on pumping process in initial and steady state is outlined. Pumping delay time due to sojourn time of the molecule is also discussed.

著者

春田 正毅

出版者

一般社団法人 日本真空学会

雑誌

Journal of the Vacuum Society of Japan (ISSN:18822398)

巻号頁・発行日

vol.51, no.11, pp.719-720, 2008 (Released:2009-01-15)

参考文献数

2

著者

堀内 伸 伯川 秀樹 中尾 幸道

出版者

一般社団法人 日本真空学会

雑誌

Journal of the Vacuum Society of Japan (ISSN:18822398)

巻号頁・発行日

vol.56, no.8, pp.298-302, 2013 (Released:2013-08-27)

参考文献数

13

被引用文献数

1

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Electroless plating (ELP) process using Pt and Pd colloid catalyst has been developed. Au, Pt and Cu metal films with sufficient adhesion were successfully obtained without special treatment of substrate surfaces. Owing to the excellent catalytic property of the Pt nanoparticles, continuous gold thin films can be produced at room temperature using a simple cyanide-free gold electroless plating solution composed of chloroauric acid and hydrogen peroxide. Pd colloidal catalyst has been also developed for a novel Pt ELP process and for commercial Cu ELP process. The process requires no surface modifications for the immobilization of the catalyst, and by simple post-annealing the adhesion of the plated films to various polymer films can be improved dramatically. We have thus developed an environment-friendly etchingless ELP process without the use of toxic and hazardous substances.

著者

鈴木 淳 北條 久男 小林 太吉

出版者

一般社団法人 日本真空学会

雑誌

真空技術 (ISSN:18822398)

巻号頁・発行日

vol.58, no.5, pp.177-180, 2015

被引用文献数

1

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&nbsp;&nbsp;A novel quartz oscillator that has a temperature-stable output was investigated for outdoor hydrogen sensing. The output from the quartz oscillator remained almost constant for temperatures in the range of 15 to 50℃. Fluctuations of the output of the quartz oscillator in this temperature range were 0.3% at constant relative humidity of 0%RH, which corresponds to the change in the output when 0.3 vol% of hydrogen leaked in air. This change is thus sufficiently lower than the necessary minimum detection level of 1 vol% hydrogen concentration using the novel quartz oscillator's output during outdoor hydrogen sensing.<br>

著者

齋藤 彰 宮村 友輔 石川 陽子 村瀬 淳一 赤井 恵 桑原 裕司

出版者

一般社団法人 日本真空学会

雑誌

Journal of the Vacuum Society of Japan (ISSN:18822398)

巻号頁・発行日

vol.52, no.4, pp.218-223, 2009 (Released:2009-05-29)

参考文献数

29

被引用文献数

3

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Conspicuous metallic blue of Morpho butterflies is well known and attract interest because it is a brilliant luster of natural beings. The blue is produced by their proteins, which are almost transparent without pigment. The origin of the coloration with high reflectivity (>~60%) is then attributed to an interference effect based on a periodic structure. However, the interference contradicts the blue that is maintained in too wide angular range (>±40° from the normal). This mystery has recently been explained with a specific multilayer, which is a fine combination of regular and random structures at nanometer scale. We proved this hypothesis successfully by emulating the 3D structures by deposition of multilayer film on a nano-patterned substrate. Such artificial structural color can be applied to various industries, because it makes colors qualitatively impossible by pigment, and resistant to fading due to chemical change over longtime. Also we developed a high throughput nano-patterning process by use of nano-imprinting method, and succeeded in controlling the optical properties both in angular and wavelength distribution.

著者

中山 勝矢

出版者

一般社団法人 日本真空学会

雑誌

Journal of the Vacuum Society of Japan (ISSN:18822398)

巻号頁・発行日

vol.51, no.5, pp.328-329, 2008 (Released:2008-06-18)

著者

藤川 友佳 木内 正人 松谷 貴臣 竹内 孝江

出版者

一般社団法人 日本真空学会

雑誌

真空 (ISSN:05598516)

巻号頁・発行日

vol.49, no.12, pp.780-781, 2006 (Released:2007-08-09)

参考文献数

7

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We deposited transparent and electrical conductive thin films on polymer substrates ZEONOR® (cycloolefin) by oxygen ion beam induced chemical vapor deposition (IBICVD) with tetramethylstannane (TMS). The film depositions were carried out the acceleration voltage of oxygen ion beam in range from 50 to 300 eV. The deposition time was fixed at 180 minutes at all conditions. Under irradiation of 300 eV oxygen ions, the optical transmittance at 550 nm and the resistivity of the prepared film were 80% and 5.4×10-2 Ω•cm, respectively. When oxygen ion energy increased from 50 to 300 eV, root mean square of roughness and contamination of carbon were decreased.

著者

宮村 会実佳 金田 健志 佐藤 泰史 重里 有三

出版者

一般社団法人 日本真空学会

雑誌

真空 (ISSN:05598516)

巻号頁・発行日

vol.50, no.6, pp.432-436, 2007 (Released:2008-01-01)

参考文献数

13

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Photocatalytic activities of titanium dioxide (TiO2) films deposited by rf sputtering were investigated from view points of their internal stress. TiO2 films were deposited on fused quartz glass or 100 μm thick micro-sheet glass substrates at room temperature, 200 or 400°C under various total gas pressures (Ptot) of 0.3~5.0 Pa with oxygen flow ratio [O2/(O2+Ar)] of 60% using a Ti metal target. Photocatalytic activity was evaluated by photodecomposition of acetaldehyde (CH3CHO) under UV illumination (black light lamp, 0.4 mW/cm2). Compressive internal stress was estimated by cantilever method using the micro-sheet glass, which clearly decreased from -2.1 to -0.1 GPa with the increase in the Ptot from 0.3 to 3.0 Pa. The films with the compressive stress less than -0.5 GPa performed the photocatalytic activity. Furthermore, compressive or tensile stress was applied by external force on the TiO2 films deposited on the curved micro sheet glasses by flattening these substrates after the deposition. The photodecomposition activity of the films with the slight compressive stress improved clearly, whereas the one of the films with the tensile stress degraded.

著者

大村 孝幸 山口 晴久

出版者

一般社団法人 日本真空学会

雑誌

真空 (ISSN:05598516)

巻号頁・発行日

vol.50, no.4, pp.258-263, 2007 (Released:2008-01-01)

参考文献数

13

著者

横山 祐典

出版者

一般社団法人 日本真空学会

雑誌

真空 (ISSN:05598516)

巻号頁・発行日

vol.50, no.7, pp.486-493, 2007 (Released:2008-01-01)

参考文献数

66

被引用文献数

1 1