Plasmonic activity on gold nanoparticles embedded in nanopores formed in a surface layer of silica glass by swift-heavy-ion irradiation

Ken Ichi Nomura, Yoshimichi Ohki, Makoto Fujimaki, Xiaomin Wang, Koichi Awazu, Tetsuro Komatsubara

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    Silica glass was irradiated by swift heavy ions by selecting the ion species and its energy in order to induce the largest damaged regions. These regions were then selectively etched by hydrofluoric acid vapour to form nanopores on the glass surface. Subsequently, gold nanoparticles were embedded into the nanopores by vacuum evaporation, followed by thermal treatment. In the new plasmonic structure obtained with these procedures, the localized surface plasmon excitation wavelength induced around the gold nanoparticles was found to show a redshift, which agreed well with the theoretical calculation, when water was introduced into the nanopores. This indicates that the fabricated structure can be used as a sensing element to detect the adhesion of substances such as biomolecules to the nanoparticles by measuring the redshift.

    Original languageEnglish
    Article number475306
    JournalNanotechnology
    Volume20
    Issue number47
    DOIs
    Publication statusPublished - 2009

    Fingerprint

    Heavy Ions
    Nanopores
    Fused silica
    Ion bombardment
    Heavy ions
    Gold
    Nanoparticles
    Hydrofluoric Acid
    Vacuum evaporation
    Hydrofluoric acid
    Biomolecules
    Adhesion
    Vapors
    Heat treatment
    Ions
    Glass
    Wavelength
    Water

    ASJC Scopus subject areas

    • Bioengineering
    • Chemistry(all)
    • Electrical and Electronic Engineering
    • Mechanical Engineering
    • Mechanics of Materials
    • Materials Science(all)

    Cite this

    Plasmonic activity on gold nanoparticles embedded in nanopores formed in a surface layer of silica glass by swift-heavy-ion irradiation. / Nomura, Ken Ichi; Ohki, Yoshimichi; Fujimaki, Makoto; Wang, Xiaomin; Awazu, Koichi; Komatsubara, Tetsuro.

    In: Nanotechnology, Vol. 20, No. 47, 475306, 2009.

    Research output: Contribution to journalArticle

    Nomura, Ken Ichi ; Ohki, Yoshimichi ; Fujimaki, Makoto ; Wang, Xiaomin ; Awazu, Koichi ; Komatsubara, Tetsuro. / Plasmonic activity on gold nanoparticles embedded in nanopores formed in a surface layer of silica glass by swift-heavy-ion irradiation. In: Nanotechnology. 2009 ; Vol. 20, No. 47.
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