Tunability of the refractive index of gold nanoparticle dispersions

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

doi:10.1021/nl071893x

Tunability of the refractive index of gold nanoparticle dispersions

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

Polymer Hybrid Materials Research Center

Research output: Contribution to journal › Article › peer-review

136 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 language	English
Pages (from-to)	3418-3423
Number of pages	6
Journal	Nano Letters
Volume	7
Issue number	11
DOIs	https://doi.org/10.1021/nl071893x
Publication status	Published - 2007 Nov 1

ASJC Scopus subject areas

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

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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.",

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AU - Mallouk, Thomas E.

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