Control wettability of the hydrogen-terminated diamond surface and the oxidized diamond surface using an atomic force microscope

Yu Kaibara, Kenta Sugata, Minoru Tachiki, Hitoshi Umezawa, Hiroshi Kawarada

    Research output: Contribution to journalArticle

    72 Citations (Scopus)

    Abstract

    The force-distance curve indicates the difference in wettability between the hydrogen-terminated (H-terminated) diamond surface and the AFM-field-assisted local oxidized (O-terminated) area. Using a hydrophilic (silicon with native oxide) tip and a hydrophobic (coated with gold) tip as AFM tips, the adhesion force mapping measurement shows that the H-terminated surface is hydrophobic and that the O-terminated surface is hydrophilic. After heating in vacuum, the difference in the adhesion force between two surfaces decreased. This means that water adsorbed on the tip and sample surfaces affects the adhesion force. As an alternative measurement, the contact angle measurement of the H-terminated surface and the chemically oxidized surface was performed. It is proved that the oxidized surface is more hydrophilic than the H-terminated surface and that its surface energy is derived from surface polarity such as that involved in hydrogen bonding and electric dipole which is twofold that the H-terminated surface.

    Original languageEnglish
    Pages (from-to)560-564
    Number of pages5
    JournalDiamond and Related Materials
    Volume12
    Issue number3-7
    DOIs
    Publication statusPublished - 2003 Mar

    Fingerprint

    Diamond
    wettability
    Wetting
    Hydrogen
    Diamonds
    Microscopes
    diamonds
    microscopes
    hydrogen
    adhesion
    Adhesion
    atomic force microscopy
    Silicon
    Angle measurement
    Interfacial energy
    Gold
    Oxides
    electric dipoles
    surface energy
    Contact angle

    Keywords

    • Atomic force microscope
    • Field-assisted local oxidation
    • Hydrogen-terminated diamond
    • Hydrophobic interaction

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Materials Chemistry
    • Surfaces, Coatings and Films
    • Surfaces and Interfaces

    Cite this

    Control wettability of the hydrogen-terminated diamond surface and the oxidized diamond surface using an atomic force microscope. / Kaibara, Yu; Sugata, Kenta; Tachiki, Minoru; Umezawa, Hitoshi; Kawarada, Hiroshi.

    In: Diamond and Related Materials, Vol. 12, No. 3-7, 03.2003, p. 560-564.

    Research output: Contribution to journalArticle

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    AU - Kaibara, Yu

    AU - Sugata, Kenta

    AU - Tachiki, Minoru

    AU - Umezawa, Hitoshi

    AU - Kawarada, Hiroshi

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    AB - The force-distance curve indicates the difference in wettability between the hydrogen-terminated (H-terminated) diamond surface and the AFM-field-assisted local oxidized (O-terminated) area. Using a hydrophilic (silicon with native oxide) tip and a hydrophobic (coated with gold) tip as AFM tips, the adhesion force mapping measurement shows that the H-terminated surface is hydrophobic and that the O-terminated surface is hydrophilic. After heating in vacuum, the difference in the adhesion force between two surfaces decreased. This means that water adsorbed on the tip and sample surfaces affects the adhesion force. As an alternative measurement, the contact angle measurement of the H-terminated surface and the chemically oxidized surface was performed. It is proved that the oxidized surface is more hydrophilic than the H-terminated surface and that its surface energy is derived from surface polarity such as that involved in hydrogen bonding and electric dipole which is twofold that the H-terminated surface.

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    KW - Hydrophobic interaction

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