Fabrication of inert silver nanoparticles with a thin silica coating

Ken Ichi Nomura, Shinji Fujii, Yoshimichi Ohki, Koichi Awazu, Makoto Fujimaki, Junji Tominaga, Nobuko Fukuda, Tsutomu Hirakawa, Carsten Rockstuhl

    Research output: Contribution to journalArticle

    10 Citations (Scopus)

    Abstract

    We present a genuine experimental technique to fabricate silver nanoparticles with an ultrathin silica coating, thus making the nanoparticles chemically inert. The impact of the coating on plasmonic properties is experimentally quantified and compared with theoretical predictions. Furthermore, numerical simulations of the near-field enhancing properties of the nanoparticles are conducted. It is found that the coatings fabricated are sufficiently thin to make the plasmonic resonance wavelength shift negligible and for observing a significant field enhancement on the surface of the silica shell at the resonance wavelength. Application of such inert nanoparticles to sensitize the absorption of near-ultraviolet light is discussed.

    Original languageEnglish
    Pages (from-to)8641-8643
    Number of pages3
    JournalJapanese Journal of Applied Physics
    Volume47
    Issue number11
    DOIs
    Publication statusPublished - 2008 Nov 14

    Fingerprint

    Silver
    silver
    Silica
    Nanoparticles
    silicon dioxide
    coatings
    Fabrication
    Coatings
    nanoparticles
    fabrication
    Wavelength
    wavelengths
    ultraviolet radiation
    near fields
    augmentation
    shift
    Computer simulation
    predictions
    simulation

    Keywords

    • Coating
    • Electric field
    • Localized surface plasmon
    • Nanoparticle
    • Optical absorption
    • Silica
    • Silver

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

    Cite this

    Nomura, K. I., Fujii, S., Ohki, Y., Awazu, K., Fujimaki, M., Tominaga, J., ... Rockstuhl, C. (2008). Fabrication of inert silver nanoparticles with a thin silica coating. Japanese Journal of Applied Physics, 47(11), 8641-8643. https://doi.org/10.1143/JJAP.47.8641

    Fabrication of inert silver nanoparticles with a thin silica coating. / Nomura, Ken Ichi; Fujii, Shinji; Ohki, Yoshimichi; Awazu, Koichi; Fujimaki, Makoto; Tominaga, Junji; Fukuda, Nobuko; Hirakawa, Tsutomu; Rockstuhl, Carsten.

    In: Japanese Journal of Applied Physics, Vol. 47, No. 11, 14.11.2008, p. 8641-8643.

    Research output: Contribution to journalArticle

    Nomura, KI, Fujii, S, Ohki, Y, Awazu, K, Fujimaki, M, Tominaga, J, Fukuda, N, Hirakawa, T & Rockstuhl, C 2008, 'Fabrication of inert silver nanoparticles with a thin silica coating', Japanese Journal of Applied Physics, vol. 47, no. 11, pp. 8641-8643. https://doi.org/10.1143/JJAP.47.8641
    Nomura, Ken Ichi ; Fujii, Shinji ; Ohki, Yoshimichi ; Awazu, Koichi ; Fujimaki, Makoto ; Tominaga, Junji ; Fukuda, Nobuko ; Hirakawa, Tsutomu ; Rockstuhl, Carsten. / Fabrication of inert silver nanoparticles with a thin silica coating. In: Japanese Journal of Applied Physics. 2008 ; Vol. 47, No. 11. pp. 8641-8643.
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    AU - Fujimaki, Makoto

    AU - Tominaga, Junji

    AU - Fukuda, Nobuko

    AU - Hirakawa, Tsutomu

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