Localised and delocalised plasmons in metallic nano-voids


Kelf, T.A., Sugawara, Y., Cole, R.M., Baumberg, J.J., Abdelsalam, M.E., Cintra, S., Mahajan, S. and Russell, A.E. (2006) Localised and delocalised plasmons in metallic nano-voids Physical Review B, 74, (24), 245415-[12pp]. (doi:10.1103/PhysRevB.74.245415).

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Description/Abstract

Nanostructured metal films comprised of periodically arranged spherical voids are grown by electrochemical deposition through a self-assembled template. Detailed measurements of the angle- and orientation-dependent reflectivity for different sample geometries reveal the spectral dispersion of several different types of surface plasmon modes. The dependence of the energies of both delocalized Bragg and localized Mie plasmons on the void goemetry is presented, along with theoretical models to explain some of these experimental findings. Strong interactions between the different plasmon modes as well as other mixing processes are identified. Understanding such plasmonic crystals allows for the engineering of devices tailored for a wide range of sensing application.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1103/PhysRevB.74.245415
ISSNs: 1550-235X (print)
Keywords: plasmons, nanostructure, metal, localised bandgap, plasmonic nanophotonics
Subjects:
ePrint ID: 42941
Date :
Date Event
13 December 2006Published
Date Deposited: 03 Jan 2007
Last Modified: 16 Apr 2017 18:50
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/42941

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