Mechanism of elongation of gold or silver nanoparticles in silica by irradiation with swift heavy ions

Koichi Awazu, Xiamin Wang, Makoto Fujimaki, Junji Tominaga, Shinji Fujii, Hirohiko Aiba, Yoshimichi Ohki, Tetsuro Komatsubara

    Research output: Contribution to journalArticle

    14 Citations (Scopus)

    Abstract

    It has been reported that elongated Au nanoparticles oriented parallel to one another can be synthesized in SiO2 by ion irradiation. Our aim was to elucidate the mechanism of this elongation. We prepared Au and Ag nanoparticles with a diameter of 20 nm in an SiO2 matrix. It was found that Au nanoparticles showed greater elongated with a higher flux of ion beam and with thicker SiO2 films. In contrast, Ag nanoparticles split into two or more shorter nanorods aligned end to end in the direction parallel to the ion beam. These experimental results are discussed in the framework of a thermal spike model of Au and Ag nanorods embedded in SiO2. The lattice temperature exceeds the melting temperatures of SiO2, Au and Ag for 100 ns after one 110 MeV Br10+ ion has passed through the middle of an Au or Ag nanorod. Crown

    Original languageEnglish
    Pages (from-to)941-943
    Number of pages3
    JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
    Volume267
    Issue number6
    DOIs
    Publication statusPublished - 2009 Mar

    Fingerprint

    Heavy ions
    elongation
    Elongation
    heavy ions
    Silver
    Gold
    Nanorods
    silver
    Silica
    Irradiation
    gold
    nanorods
    Nanoparticles
    silicon dioxide
    nanoparticles
    irradiation
    Ion beams
    ion beams
    Ion bombardment
    ion irradiation

    Keywords

    • Au nanoparticles
    • Nanofabrication
    • Silica glass
    • Swift heavy ion

    ASJC Scopus subject areas

    • Instrumentation
    • Nuclear and High Energy Physics

    Cite this

    Mechanism of elongation of gold or silver nanoparticles in silica by irradiation with swift heavy ions. / Awazu, Koichi; Wang, Xiamin; Fujimaki, Makoto; Tominaga, Junji; Fujii, Shinji; Aiba, Hirohiko; Ohki, Yoshimichi; Komatsubara, Tetsuro.

    In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 267, No. 6, 03.2009, p. 941-943.

    Research output: Contribution to journalArticle

    Awazu, Koichi ; Wang, Xiamin ; Fujimaki, Makoto ; Tominaga, Junji ; Fujii, Shinji ; Aiba, Hirohiko ; Ohki, Yoshimichi ; Komatsubara, Tetsuro. / Mechanism of elongation of gold or silver nanoparticles in silica by irradiation with swift heavy ions. In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. 2009 ; Vol. 267, No. 6. pp. 941-943.
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    AU - Wang, Xiamin

    AU - Fujimaki, Makoto

    AU - Tominaga, Junji

    AU - Fujii, Shinji

    AU - Aiba, Hirohiko

    AU - Ohki, Yoshimichi

    AU - Komatsubara, Tetsuro

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