著者

中村 守

出版者

公益社団法人 日本表面科学会

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.35, no.4, pp.221-222, 2014-04-10 (Released:2014-04-22)

参考文献数

1

被引用文献数

1

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希少資源の需給に係わる世界の現状について説明するとともに,最大の資源需要を作り出している自動車産業において今後必要とされる希少資源について述べた。また,希少資源対策に適用される表面処理技術としての表面コーティング技術についても触れた。最後に,産総研における希少資源対策についての研究分野横断的取り組みや,希少資源代替・省使用材料技術の開発についての取り組みも紹介した。

著者

龍崎 奏

出版者

公益社団法人 日本表面科学会

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.33, no.8, pp.473-474, 2012-08-10 (Released:2012-08-23)

著者

山本 貞明 田中 賢 角南 寛 新井 景子 高山 あい子 山下 慈京子 森田 有香 下村 政嗣

出版者

公益社団法人 日本表面科学会

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.27, no.9, pp.502-510, 2006-09-10 (Released:2007-06-15)

参考文献数

59

被引用文献数

1 1

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Patterned surface topographies play vital roles in cellular response such as adhesion, proliferation, and differentiation. Here, we characterized adsorption of fibronectin (Fn) as a typical cell adhesion protein onto honeycomb-patterned porous films (“honeycomb film”) of poly (ε-caprolactone) (PCL) incubated in a Fn phosphate-buffered saline (PBS) solution by using atomic force microscopy (AFM) and confocal laser scanning microscopy (CLSM). In order to determine how cells respond to a honeycomb film, focal adhesion of porcine aortic endothelial cells (PAECs) cultured on the Fn coated honeycomb films in a serum free medium were characterized by using immunofluorescencet labeling of vinculin and focal adhesion kinase autophosphorylated at the tyrosine residue 397 (pY 397 FAK). Fn adsorbed around the pore periphery of a honeycomb film to form fibriller aggregates in a ring-shape structure. The sites of pY 397 FAK and vinculin were overlapped and agreed well with the adsorption site of Fn fibrils. This demonstrated that PAECs adhered onto the honeycomb films at focal contact points localized around pore periphery. The expression of pY397FAK determined by an immunoprecipitation method was 3 times higher than that on a PCL flat film as a reference. These results imply that the signaling mediated by a integrin receptor-Fn binding were activated on honeycomb films and this type of signaling was activated effectively on a honeycomb film compared with on a flat film. The cell response to honeycomb films (adhesion pattern and phosphorilation of FAK) was supposed to originate from the regularly arraigned adsorption pattern of Fn determined by the pore structure of the film.

著者

中村 雅一 佐久間 広貴 酒井 正俊 飯塚 正明 工藤 一浩

出版者

公益社団法人 日本表面科学会

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.24, no.2, pp.77-82, 2003-02-10 (Released:2009-01-27)

参考文献数

15

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This article presents the concept and some fundamental research on ‘self-assembled’ nanoscale transistors using charge transfer (CT) complexes. First, TTF-TCNQ CT complex wires of organic metals having high conductivity, are formed by applying electric field during vacuum deposition. Then, a self-aligned active part is formed in the gap between a pair of grown wires. The semiconductive part spontaneously formed at the point of wire contact can be used as an active part; besides, we can employ the metal-semiconductor (metal-insulator) phase transition devices consisting of CT complex bilayers of which electronic structure is modulated by external electric field. On the CT complex wires and CT complex bilayer transistors, some experimental results are presented.

著者

新庄 輝也 中山 則昭

出版者

公益社団法人 日本表面科学会

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.21, no.6, pp.332-339, 2000 (Released:2007-04-06)

参考文献数

25

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Recent developments of the research on metallic multi-layers, relating to epitaxy and lattice distortion, are briefly surveyed. Main topics are structural analysis using X-ray diffraction, superstructures with monolayers, ultrathin films with unstable crystal phase fabricated utilizing epitaxy, and progresses in supermodulus effect study.

著者

高見 知秀

出版者

公益社団法人 日本表面科学会

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.25, no.6, pp.363-369, 2004-06-10 (Released:2008-05-02)

参考文献数

30

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Analyses and assignments of reflection high-energy electron diffraction patterns of Si(100) surfaces are demonstrated for the practice. Several check points for the RHEED analysis are described.

著者

春山 潤 袖山 慶太郎 高田 和典 館山 佳尚

出版者

公益社団法人 日本表面科学会

雑誌

表面科学学術講演会要旨集

巻号頁・発行日

vol.34, 2014

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我々は全固体リチウムイオン電池の実用化に向けた大きな問題である酸化物正極/硫化物電解質の界面抵抗の原因を調べるため, 界面の第一原理計算を行い, 修飾層の有無で界面構造の変化を調べた.典型的な系としてLiCoO₂/LiNbO₃/Li₃PS₄を扱い, 得られた界面の原子構造とLiイオン空孔の形成エネルギーから平衡状態と初期充電時の界面のリチウムイオン分布を求め, 界面抵抗の原因を推測した.

著者

岡 博文

出版者

公益社団法人 日本表面科学会

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.38, no.9, pp.481-482, 2017-09-10 (Released:2017-09-20)

参考文献数

1

著者

角南 寛 清水 雄介 横田 育子 五十嵐 靖之 岸本 英博 松下 正之

出版者

公益社団法人 日本表面科学会

雑誌

表面科学

巻号頁・発行日

vol.38, no.9, pp.473-478, 2017

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<p>NIH-3T3 cells were adhered to three kinds of 3D micro-patterned scaffolds, placed face-down into culture medium in glass-bottomed dishes, and cell migration and the scaffolds were observed over 72 h. The three scaffolds differed only in terms of the unit shape of the repetitive pattern, namely a scale structure with equilateral triangular pores, a check structure with regular tetragonal pores, or a stripe structure with rectangular grooves. The angle that cells turn is influenced by the unit shape of the 3D patterned scaffold on which they are cultured. These differences in the angles that migrating cells turned correlated with differences in the angles they extended protrusions. In summary, the unit shape of the micro-patterned scaffold affects the angle at which cells extend, which in turn affects the angle at which migrating cells turn.</p>

著者

瀬筒 秀樹

出版者

公益社団法人 日本表面科学会

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.38, no.3, pp.135-137, 2017-03-10 (Released:2017-03-24)

参考文献数

7

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カイコ(蚕)がつむぐシルク(絹)は,古来より衣服の材料として人間に利用されてきた。シルクは,肌に優しく,低CO2排出量の天然タンパク質長繊維として見直されつつある素材である。カイコを育てて繭からシルクをとる「養蚕」は,明治時代以降の日本の主要な外貨獲得産業となり,日本の近代化を支えた。しかし,世界恐慌や代替品の化学繊維の登場,さらに国際価格競争の激化や農家の高齢化により,日本の養蚕業は深刻な存亡の危機に立たされている。そこで近年,日本に蓄積された高度な養蚕技術と,遺伝子組換え等の新たなバイオテクノロジー技術を組み合わせることで,従来の養蚕業を新たな産業(新蚕業)に転換する試みが進められている。その象徴が,「ひかるシルク」である。ひかるタンパク質=蛍光タンパク質をシルクに組み込んで,ひかるシルクをつくる技術は,これまでにないシルクと新素材をつくり出すことができるだけでなく,カイコを医薬品の製造工場として利用可能にする技術であり,「蚕業革命」を起こしうる技術である。表面科学やナノテクノロジーの研究は,今後のシルク新素材・新デバイスや新利用法の開発において,非常に重要な役割を果たしていくことが期待される。

著者

桜井 健次 蒋 金星

出版者

公益社団法人 日本表面科学会

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.38, no.9, pp.448-454, 2017-09-10 (Released:2017-09-20)

参考文献数

18

被引用文献数

2

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Exotic functions of thin films are quite often connected to the unique atomic and molecular features of buried layers and interfaces. In reality, the structures are far from uniform, but seeing such inhomogeneity is extremely difficult. The present research concerns how to solve the difficulty. The novel technique developed is the X-ray reflectivity imaging. While ordinary X-ray reflectivity gives very precise information on the electron density profile along the depth in thin films, the method can have some imaging capability, by combining with the image reconstruction scheme. Some practical applications will be reported.

著者

平井 悠司 佐藤 杏樹 松永 光由 大園 拓哉 下村 政嗣

出版者

公益社団法人 日本表面科学会

雑誌

表面科学学術講演会要旨集

巻号頁・発行日

vol.33, 2013

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自然界には表面微細構造に由来する様々な機能を有する表面があり、近年ではこの微細構造を模倣することで機能を発現させた材料を作製する、バイオミメティクスと呼ばれる分野が注目を集めている。本発表では整流効果や抗付着性を有するサメ肌表面に着目し、その表面に形成しているリブレットとディンプルの階層構造を自己組織化を利用して模倣・作製し、その表面機能の測定を行ったので報告する。

著者

鳥海 明

出版者

公益社団法人 日本表面科学会

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.26, no.5, pp.242-248, 2005-05-10 (Released:2007-12-19)

参考文献数

28

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This paper briefly reviews challenges and prospects for high-κ gate dielectric technology, mainly focusing on the fundamental material properties. First, we need to understand the origin of high dielectric constant of those materials, and then we can consider some material engineering such as the dielectric constant improvement as well as overcome drawbacks such as the fragile reliability, on the basis of mechanisms giving rise to the high dielectric constant. From the device performance point of view, the mobility and threshold voltage controls are necessarily required for employing high-κ materials in actual ULSIs. It is also discussed that the gate electrode selection is very important as well as the high-κ gate dielectrics in terms of the Fermi level pinning. Finally, it is emphasized that the material scalability applicable for a couple of technology nodes should be taken into account for the material selection.

著者

福村 知昭 長谷川 哲也

出版者

公益社団法人 日本表面科学会

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.23, no.4, pp.233-238, 2002-04-10 (Released:2008-10-03)

参考文献数

25

被引用文献数

1

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The existence of magnetic domain has been known for a long time, and its importance is further growing because of rapid storage density increase of recording media. Magnetic domain observations made it possible to derive the microscopic magnetic parameters such as the magnetic anisotropy and the domain wall energy connected with exchange interaction in addition to the size of magnetic domain. Among the various methods for observing the magnetic domain, scanning probe microscopes are powerful tools owing to the user-friendliness and the flexibility to sample specimen and measurement environment. These instruments enable us to evaluate three dimensional magnetic domain structure and to explore novel magnetic materials in a high throughput way. Here, we show the results obtained from the measurements of ferromagnetic semiconductors, Mn doped GaAs and Co doped TiO2 thin films, and a colossal magnetoresistive material, La1−xSrxMnO3 composition-spread film.

著者

木口 学 小西 達也 三浦 進一 村越 敬

出版者

公益社団法人 日本表面科学会

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.26, no.7, pp.421-427, 2005-07-10 (Released:2007-09-13)

参考文献数

24

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Gold nano wires were mechanically fabricated in solution to study their quantized conductance behavior under the electrochemical potential control. A nano wire 1 nm in length showing a unit value of the quantized conductance (G0 = 2e2/h) was fabricated in solution at room temperature by choosing appropriate electrochemical potential and electrolyte. As well as a unit value, several fractional values also appeared at the quantization. Intensity of the fractional conductance peak at 0.6 G0 in the histogram increased as the electrochemical potential of the wire became negative. Conductance trace proves that the fractional peak in the histogram is due to reversible conductance fluctuation between a unit (1 G0) and the fractional value (0.6 G0). These experimental results strongly suggest the formation of a gold mono-atomic wire showing reversible phase transition between a dimerized state and an equal spacing state. Possibility regarding the mono-atomic wire as a predecessor for Pierls transition in 1 D metal system was discussed.

著者

本田 耕一郎 長 康雄

出版者

公益社団法人 日本表面科学会

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.28, no.2, pp.78-83, 2007-02-10 (Released:2007-03-20)

参考文献数

11

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By applying Scanning Nonlinear Dielectric Microscopy (SNDM), we succeeded in clarifying the position of the electrons/holes in the gate SiO2-Si3N4-SiO2 (ONO) film of the Metal-ONO-Semiconductor type flash memories, After the write-erase cycling operation, the electrons were found in the Si3N4 part of the ONO film. The holes, on the other hand, were found in the Si3N4 film as well as at the bottom of the SiO2 film. This indicates that the electrons and holes are apparently neutralized but exist separately. We also succeeded in clarifying that electrons exist in the poly-Si layer of the floating gate of a flash memory. We confirmed that SNDM is one of the most useful methods for observing the charge in flash memories.

著者

高橋 元次

出版者

公益社団法人 日本表面科学会

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.35, no.1, pp.4-10, 2014-01-10 (Released:2014-01-22)

参考文献数

42

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Many bioengineering techniques to elucidate functions and characteristics of the skin have been developed until now. They measure the water content of stratum corneum, transepidermal water loss (TEWL), skin surface contour, mechanical properties, blood flow, sebum secretion rate, wrinkles, skin pigmentation and so on. These instrumental measurements are applied to validation of the efficacy of the cosmetics. Recently, a few in vivo bio-microscopes which non-invasively visualize horizontal image or vertical cross section of the skin with subcellular resolution, have been developed by using non-linear optics phenomenon. In this paper, I describe how skin measurement technologies have been changed with time and applied to cosmetic science, and also review in vivo bio-microscopes, they are optical coherence tomography (OCT), confocal laser scanning microscope (CLSM), second harmonic generation (SHG) microscope, multi photon microscope (MPM), and coherent anti-Stokes Raman scattering (CARS), which will be very helpful to examine the effects of the cosmetics on the skin.

著者

米田 忠弘

出版者

公益社団法人 日本表面科学会

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.30, no.6, pp.325-331, 2009-06-10 (Released:2009-06-20)

参考文献数

19

被引用文献数

1 1

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We discuss the detection of a single spin by monitoring the tunneling current of the scanning tunneling microscope in the presence of a magnetic field. We have measured high frequency signals in the tunneling current of scanning tunneling microscopy for a submonolayer oxide thin film on the Si(111)-7×7 surface. We demonstrate that the signal is related to the Larmor precession of the electron spin associated with a dangling bond. The detected precession frequency possesses a broad distribution (line-width is comparable with that observed by conventional electron spin resonance) and a split near the maxima, both of which are attributed to the inhomogeneity of the g factor of a single spin. With site-specific measurement, we found that the spin signal was detected on the bright Si adatom in which oxygen atoms occupy the backbonds and weakened the metallic nature of the Si(111)-7×7 surface. The measured Larmor frequency corresponded to g∼2.00. On the other hand, no peak was detected on the dark adatom that is tied with an oxygen atom at the on-top site. This is due to the disappearance of the Si dangling bond through the chemical bond formation with the oxygen atom.

出版者

公益社団法人 日本表面科学会

雑誌

表面科学 (ISSN:03885321)

巻号頁・発行日

vol.28, no.1, pp.46-46, 2007-01-10 (Released:2007-03-22)

著者

Seyedeh Maryamdokht Taimoory John F. Trant Abbas Rahdar Mousa Aliahmad Fardin Sadeghfar Mahmoud Hashemzaei

出版者

公益社団法人 日本表面科学会

雑誌

e-Journal of Surface Science and Nanotechnology (ISSN:13480391)

巻号頁・発行日

vol.15, pp.31-39, 2017-04-01 (Released:2017-04-03)

参考文献数

88

被引用文献数

24

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Magnetite (Fe3O4) nanoparticles, are promising inorganic nanomaterials for future biomedical applications due to their low toxicity and unique magnetic properties. However, the synthesis of these particles can often be expensive, energy intensive, and non-scalable, requiring the addition of surfactants to stabilize the material to control the particle size and avoid agglomeration. We wish to report a simple, green, surfactant-free electrochemical synthesis of these materials using a closed aqueous system at ambient temperature. Particle diameter, between 19 and 33 nm, was controlled by simply modifying the distance between the electrodes. These magnetite nanoparticles were then fully characterized using both spectroscopy and microscopy. Vibrational magnetometry indicates that as the size of the particle decreases, the magnetic hysteretic gap decreases, although for samples below 25 nm no inter-sample difference was observed. To support this experimental data, we carried out a Density Functional Theory (DFT) analysis of magnetite containing more than three iron atoms in the cluster, an essential proposition as magnetite contains three distinct iron species. These calculations were used to support the experimental observations, and closely reproduced both the experimental IR spectrum, and the XRD pattern. In vitro cytotoxicity assays showed dose responsive behavior for the nanoparticles, and demonstrated that they are non-toxic at clinically relevant concentrations; below 200 μg/mL we observed no toxicity in a 48-hour standard assay. This work represents the first DFT based simulation of this detailed magnetite cluster, and demonstrates that this sustainable synthetic method is capable of producing nanomaterials with a physical and biological profile that might make them suitable for biomedical applications. [DOI: 10.1380/ejssnt.2017.31]