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Coupling Effects in 3D Plasmonic Structures Templated by Morpho Butterfly Wings

Abstract

This paper presents the study of the coupling effects of 3D plasmonic nanostructures templated by Morpho butterfly wings. Different from the random deposition of metallic nanoparticles (NPs) or conformal coating of metallic layers on butterfly wings reported previously, the 3D plasmonic nanostructures studied in this work consist of gold (Au) nanostrips quasi-periodically arranged in three dimensions, which allows us to investigate the plasmonic coupling effects. Through refractive index (RI) matching, the plasmonic coupling can be differentiated from the optical contribution of butterfly wings. By tuning the deposition thickness of Au from 30 to 90 nm, the plasmonic coupling effects between the 3D Au nanostrips are gradually enhanced. In particular, the near-field coupling results in two resonant modes and enhances the surface-enhanced Raman scattering (SERS) signals.

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Publication details

The article was received on 02 Oct 2017, accepted on 04 Dec 2017 and first published on 05 Dec 2017


Article type: Communication
DOI: 10.1039/C7NR07331C
Citation: Nanoscale, 2017, Accepted Manuscript
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    Coupling Effects in 3D Plasmonic Structures Templated by Morpho Butterfly Wings

    J. He, Q. Shen, S. Yang, G. He, P. Tao, C. Song, J. Wu, T. Deng and W. Shang, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR07331C

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