Elongation of gold nanoparticles in silica glass by irradiation with swift heavy ions

Koichi Awazu, Xiaomin Wang, Makoto Fijimaki, Junji Tominaga, Hirohiko Aiba, Yoshimichi Ohki, Tetsuro Komatsubara

    Research output: Contribution to journalArticle

    70 Citations (Scopus)

    Abstract

    We examined the mechanism whereby nanoparticles of gold embedded in silica become elongated and oriented parallel to each other on ion irradiation. Elongation occurred for gold particles with radii smaller than 25 nm. The process was simulated by using a thermal spike model. For small-radius nanoparticles, ion irradiation raises the temperature above the melting points of both gold and silica, whereas for larger nanoparticles neither the gold nanoparticle nor the surrounding silica matrix is melted.

    Original languageEnglish
    Article number054102
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume78
    Issue number5
    DOIs
    Publication statusPublished - 2008 Aug 6

    Fingerprint

    Heavy Ions
    silica glass
    Fused silica
    Heavy ions
    Gold
    elongation
    Elongation
    heavy ions
    Irradiation
    Silicon Dioxide
    gold
    Nanoparticles
    nanoparticles
    irradiation
    Silica
    Ion bombardment
    silicon dioxide
    ion irradiation
    radii
    spikes

    ASJC Scopus subject areas

    • Condensed Matter Physics

    Cite this

    Elongation of gold nanoparticles in silica glass by irradiation with swift heavy ions. / Awazu, Koichi; Wang, Xiaomin; Fijimaki, Makoto; Tominaga, Junji; Aiba, Hirohiko; Ohki, Yoshimichi; Komatsubara, Tetsuro.

    In: Physical Review B - Condensed Matter and Materials Physics, Vol. 78, No. 5, 054102, 06.08.2008.

    Research output: Contribution to journalArticle

    Awazu, Koichi ; Wang, Xiaomin ; Fijimaki, Makoto ; Tominaga, Junji ; Aiba, Hirohiko ; Ohki, Yoshimichi ; Komatsubara, Tetsuro. / Elongation of gold nanoparticles in silica glass by irradiation with swift heavy ions. In: Physical Review B - Condensed Matter and Materials Physics. 2008 ; Vol. 78, No. 5.
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    AU - Ohki, Yoshimichi

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