Preparation of diamond nanocrystallites in powder by using a coaxial arc plasma gun

Aki Tominaga, Kenji Hanada, Tomohiro Yoshida, Tsuyoshi Yoshitake

    Research output: Chapter in Book/Report/Conference proceedingConference contribution


    We suggest a new method for fabricating diamond nanoclusters by employing a coaxial arc plasma gun. Diamond powder comprised of diamond nanoclusters and amorphous carbon was fabricated in vacuum and a hydrogen atmosphere, and the diamond crystallite sizes were estimated to be 1.8, 2.3, and 2.3 nm for the powders prepared at hydrogen pressures of 0, 53.3, and 159.6 Pa respectively, from the X-ray diffraction peaks. The hydrogen ambient gas is not necessarily required for the diamond nanoclusters formation. We consider that this method enables us to form diamond nanoclusters in nucleation owing to a supersaturated condition at a facing plate located in front of an arc plasma gun.

    Original languageEnglish
    Title of host publicationDiamond Electronics and Biotechnology - Fundamentals to Applications V
    Number of pages6
    Publication statusPublished - 2012
    Event2011 MRS Fall Meeting - Boston, MA, United States
    Duration: Nov 28 2011Dec 2 2011

    Publication series

    NameMaterials Research Society Symposium Proceedings
    ISSN (Print)0272-9172


    Other2011 MRS Fall Meeting
    Country/TerritoryUnited States
    CityBoston, MA

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering


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