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Proceedings Paper

Numerical analysis of surface plasmon resonance effects on a rotational silver nanorod/nanoshell dimer
Author(s): Yuan-Fong Chou Chau
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Paper Abstract

In this work, we numerically investigate the surface plasmon resonance (SPR) effects on a pair of rotational silver nanorod/nanoshell dimer with a finite height of 1000 nm by means of finite element method with three dimensional calculation. The rotational angles of the silver nanorod/nanoshell dimer are chosen θ=0°, θ=25°, θ=45° and θ=90°, respectively. The proposed structure exhibits a red-shifted localized SPR that can tuned over an extended wavelength range by varying the dielectric constant in metal nanoshell and the rotational angle of the silver nanorod/nanoshell dimer. The tunable optical properties on SPR phenomena are attributed to the rotational effect and a larger effective size of dielectric constant that is filled with a higher refractive medium of finite height of metal nanorod/nanoshell. This unique property of a pair of rotational nanorod/nanoshell dimer is highly attractive for serving as resonant center to hold and probe smaller nanostructures, such as biomolecules or quantum dots. Such structures also show significant promise for applications in nano-switch devices, sensing, and surface-enhanced spectroscopy, due to their strong and tunable plasmon resonances.

Paper Details

Date Published: 7 June 2013
PDF: 10 pages
Proc. SPIE 8883, ICPS 2013: International Conference on Photonics Solutions, 88831F (7 June 2013); doi: 10.1117/12.2021985
Show Author Affiliations
Yuan-Fong Chou Chau, Chien Hsin Univ. of Science and Technology (Taiwan)

Published in SPIE Proceedings Vol. 8883:
ICPS 2013: International Conference on Photonics Solutions
Prathan Buranasiri; Sarun Sumriddetchkajorn, Editor(s)

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