Blue shift of plasmonic resonance induced by nanometer scale anisotropy of chemically synthesized gold nanospheres

Ryoko Watanabe-Tamaki, Atsushi Ishikawa, Takuo Tanaka

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Abstract

Anisotropic plasmonic responses on oblate spheroidal shape were investigated using chemically synthesized gold nanospheres. By employing the polarized transmission spectroscopy with oblique incidence, we observe 12-nm blue shift of the plasmonic resonant wavelength for gold nanospheres. The gold nanospheres with 3-nm deformation exhibited anisotropy by adsorbing on a substrate surface, resulting in the blue shift of plasmon resonant wavelength. The good agreement in measured and simulated transmission spectra leads to a precise design of gold nanospheres for plasmonic applications.

Original languageEnglish
Article number043110
JournalApplied Physics Letters
Volume102
Issue number4
DOIs
Publication statusPublished - Jan 28 2013
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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