Resonant properties of coupled silver hemispheroids

Ekaterina S. Babich; Sergey A. Scherbak; Alexey V. Redkov; Alexander N. Kamenskii; Igor V. Reduto; Andrey A. Lipovskii

doi:10.1117/1.JNP.11.032503

27 January 2017 Resonant properties of coupled silver hemispheroids

Ekaterina S. Babich, Sergey A. Scherbak, Alexey V. Redkov, Alexander N. Kamenskii, Igor V. Reduto, Andrey A. Lipovskii

Author Affiliations +

Journal of Nanophotonics, Vol. 11, Issue 3, 032503 (January 2017). https://doi.org/10.1117/1.JNP.11.032503

Abstract

We present a study of resonant optical properties of paired silver hemispheroids grown on a glass substrate using out-diffusion technique combined with thermal poling of the glass. Atomic force microscopy was used to characterize the morphology of the grown nanostructures. Dark-field spectroscopy and numerical simulation were applied to study the optical properties of the coupled nanoparticles (NPs) depending on the interparticle gap and size difference of the hemispheroids in a pair. Raman spectroscopy testing of the coupled hemispherical NPs showed that they can provide signal enhancement factor exceeding one of a single hemispherical NP.

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Ekaterina S. Babich, Sergey A. Scherbak, Alexey V. Redkov, Alexander N. Kamenskii, Igor V. Reduto, and Andrey A. Lipovskii "Resonant properties of coupled silver hemispheroids," Journal of Nanophotonics 11(3), 032503 (27 January 2017). https://doi.org/10.1117/1.JNP.11.032503

Received: 30 October 2016; Accepted: 28 December 2016; Published: 27 January 2017

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