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 journal › Article

130 Citations (Scopus)

Abstract

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
Volume7
Issue number11
DOIs
Publication statusPublished - 2007 Nov 1

ASJC Scopus subject areas

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

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    Kubo, S., Diaz, A., Tang, Y., Mayer, T. S., Khoo, I. C., & Mallouk, T. E. (2007). Tunability of the refractive index of gold nanoparticle dispersions. Nano Letters, 7(11), 3418-3423. https://doi.org/10.1021/nl071893x