Tunability of the refractive index of gold nanoparticle dispersions

Shoichi Kubo, Andres Diaz, Yan Tang, Theresa S. Mayer, Iam Choon Khoo, Thomas E. Mallouk

    Research output: Contribution to journalArticlepeer-review

    149 Citations (Scopus)


    Alkanethiol-capped gold nanoparticles dispersed in n-dodecane were studied by spectroscopic ellipsometry and were modeled using Mie scattering theory. The refractive index in the visible and near-infrared depended on the volume fraction of gold nanoparticles, in good agreement with the theoretical expectation that such dispersed plasmonic nanoparticles can act as low or tunable refractive index materials at specific optical wavelengths.

    Original languageEnglish
    Pages (from-to)3418-3423
    Number of pages6
    JournalNano Letters
    Issue number11
    Publication statusPublished - 2007 Nov 1

    ASJC Scopus subject areas

    • Bioengineering
    • Chemistry(all)
    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanical Engineering


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