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Paper detail

Surface Plasmon Resonance of Dumb-bell Nano-structure

We present an intuitive theoretical description of the optical properties of complex metal nano-structure, consisting of two nano-shells connected by a nano-rod giving a dumb-bell like appearance. The simulations were done using Finite Element Method. The effect of the nano-rod length and radius as also the dimensions of the nano-shells were analyzed. The absorption spectra as in peak positions and intensities have been found to have a strong dependence on the geometrical parameters of the dumb-bell. This study provides evidence that the localized surface plasmon modes play a key role in the broadband light harvesting capabilities of these nanostructures and is promising for a wide range of practical applications, for example in surface-enhanced spectroscopies.

preprint2013arXivOpen access
R. AjithVincent MathewP. Arun
cond-mat.mtrl-sci
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R. AjithVincent MathewP. Arun

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