表面科学
Online ISSN : 1881-4743
Print ISSN : 0388-5321
ISSN-L : 0388-5321
38 巻 , 2 号
選択された号の論文の13件中1~13を表示しています
巻頭言
Medard W. Welch Award受賞のお祝い
特集: さまざまな場面で活躍する剥離・接着技術
  • 扇澤 敏明
    原稿種別: 研究紹介
    2017 年 38 巻 2 号 p. 55-60
    発行日: 2017/02/10
    公開日: 2017/02/23
    ジャーナル フリー

    Because the adhesives usually consist of the multicomponents containing the polymer, the knowledge such as not only the miscibility between components but also the structure and properties in the adhesion interface is very important. We measured the interfacial thickness and the concentration profile between different polymers by using an ellipsometry and some methods of microscopy, and considered these from the viewpoint of miscibility. And, in order to investigate the initial formation process of the interface, the behavior of interfacial region was measured by a high-speed ellipsometry,whose measuring-time-interval was very short. It was considered that high mobility and entropic elasticity of the interfacial molecules contributed to the formation of the interfacial region on the initial stage. Moreover, the adhesion strength was measured in non-reactive and reactive systems and the relation between interfacial structure and adhesion strength was discussed.

  • 高島 義徳, 関根 智子, 原田 明
    原稿種別: 研究紹介
    2017 年 38 巻 2 号 p. 61-66
    発行日: 2017/02/10
    公開日: 2017/02/23
    ジャーナル フリー

    Adhesion between dissimilar materials is one of important issues in materials technologies. The bond formation between dissimilar materials should be effective to achieve the adhesion between the materials. Herein we conduct the direct adhesion of materials using non-covalent bond and covalent bond formation. We observed an external stimuli responsive adhesive system between cyclodextrin host-gels (CD gels) and guest molecules modified glass substrates (guest Sub). Using Suzuki-Miyaura cross-coupling reaction as covalent bond formation reaction, we observed direct adhesion between dissimilar materials (polymeric and inorganic materials). Glass substrate modified with iodoaryl group (I-Sub) selectively adhered to the hydrogel with an phenyl boronic acid (PB gel) using the cross-coupling reaction. The object (adhered PB gel and I-Sub) did not separate because the covalent bonds do not decompose and dissolve upon immersing into organic solvents. Cu-catalyzed azide-alkyne cycloaddition reaction and Sonogashira cross-coupling reaction can be applied to direct adhesion between gels and glass substrates. These results indicate that these reactions can be used for direct adhesion between dissimilar materials.

  • 須賀 唯知
    原稿種別: 研究紹介
    2017 年 38 巻 2 号 p. 67-71
    発行日: 2017/02/10
    公開日: 2017/02/23
    ジャーナル フリー

    A method for debonding polyimide film and ultra-thin glass from glass substrate is proposed. The method is based on the surface activated bonding approach extended to a modified bonding process using Si nano-adhesion layer. The surfaces of both polyimide film and the glass substrate are activated by Si nano-adhesion layer deposited in vacuum and bonded in situ at room temperature whereas only the ultra-thin glass surface is treated with Si nano-adhesion layer, and bonded in vacuum to glass substrate after exposure to N2 gas. Even after a thermal treatment such as TFT process over 400 to 500°C, they can be debonded by mechanical peeling at room temperature.

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  • 内海 淳, 井手 健介, 一柳 優子
    原稿種別: 研究紹介
    2017 年 38 巻 2 号 p. 72-76
    発行日: 2017/02/10
    公開日: 2017/02/23
    ジャーナル フリー
    The bonding of metal electrode and insulator hybrid interfaces is one of key techniques in 3D integration technology. As the surface activated bonding (SAB) is carried out at room temperature, the method is expected to be suitable for hybrid bonding. The metal materials such as Cu or Al are easy to directly bond using the SAB method, but insulator materials such as SiO2 or SiN are difficult. In this report, we propose a new bonding technique for SiO2/SiO2 bonding at room temperature using only Si ultra-thin films. We confirmed that the surface energy was about 1 J/m2, which is almost the same value of Si/Si bonding prepared at room temperature by SAB. Moreover, we examined the bonding of Cu/Cu by the SAB method, and we confirmed that no micro-voids were observed at the bonding interface.
  • 青野 宇紀, 岩崎 富生
    原稿種別: 研究紹介
    2017 年 38 巻 2 号 p. 77-82
    発行日: 2017/02/10
    公開日: 2017/02/23
    ジャーナル フリー

    This research demonstrates a newly developed technique to fabricate multilevel interconnections with differential adhesion strengths between metal and silicon-oxide (SiO2) thin films. In the field of micro electromechanical systems (MEMS), the various kinds of metals have been applied as functional materials, i.e. low resistance, high-temperature endurance, catalyst and so on. However, several kinds of metals are not applied on the SiO2 thin film, since an adhesion strength between metal and SiO2 thin films is not enough. Thus, the adhesion strengths (delamination energies) were estimated with a molecular dynamics simulation, and the metals of the lower wiring and the contact area were experimentally determined to easily fabricate the multilevel interconnections. Consequently, the Cr, Ti and Ni thin films can be applied as the adhesion layer on the lower wiring, and the Au and Cu thin films can be applied as the release layer on the contact area.

  • 薄葉 亮, 佐々木 成朗, 松永 行子
    原稿種別: 研究紹介
    2017 年 38 巻 2 号 p. 83-88
    発行日: 2017/02/10
    公開日: 2017/02/23
    ジャーナル フリー

    Hydrogels have attracted much attention for their biocompatibility and tunable properties for use in tissue engineering and regenerative medicine. Cellular adhesion and organization can be controlled by the microstructure of the scaffold. Here, we describe a new cellulose-based bundled hydrogel fiber fabricated by a dynamic microfluidic gelation system that utilizes a phase-separated polymer blend solution and a co-flow microfluidic device. In addition, multi-walled carbon nanotubes were embedded to enhance the mechanical and electrical properties of the gel fibers. Using normal human dermal fibroblasts, we demonstrated the bundled gel fibers facilitate cellular attachment and orientation. These results demonstrate that the bundled gel fiber may be useful in tissue engineering applications as a cell scaffold with tunable properties.

  • 島田 敏宏, 柳瀬 隆, 田村 貴大, 高見 拓哉, 伊高 健治
    原稿種別: ノート
    2017 年 38 巻 2 号 p. 89-90
    発行日: 2017/02/10
    公開日: 2017/02/23
    ジャーナル フリー

    In this Technical Note, we describe the use of adhesives for vacuum seal and sample fixation. Some of epoxy resin with inorganic filler can be used to assemble small vacuum chambers and water/current feedthrough for high vacuum, if enough caution is provided. An alloy sheet made of metal foils and boron oxide glass can be used to fix a sample to a holder.

連載企画
伝統産業と表面科学
  • 丸山 尚久
    2017 年 38 巻 2 号 p. 91-93
    発行日: 2017/02/10
    公開日: 2017/02/23
    ジャーナル フリー
    様々な原材料を使い,様々な技術・技法を駆使して,全国各地で連綿と作られて来た工芸品のうち,経済産業大臣が指定する伝統的工芸品の数は二百を超える。しかしながら,伝統的工芸技術を継承するために必要な原材料・用具および後継者の確保など,伝統的工芸品の存続に関わる課題は少なくない。一般財団法人伝統的工芸品産業振興協会では,「伝統的工芸品産業の振興を図り,もって国民の生活に豊かさと潤いを与えるとともに地域経済の発展に寄与し,国民経済の健全な発展に資すること」を目的として,伝統的工芸品に関する普及啓蒙活動を行っているが,ここ数年,特に力を入れている日本国内および海外での取り組みやインターネットを活用したPRなどを紹介する。
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