Plasmonic bandgaps and Trapped Plasmons on Nanostructured Metal Surfaces

Nanostructured metal surfaces 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 reveal the spectral dispersion, from which we identify the presence o...

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Bibliographic Details
Published in:arXiv.org 2005-11
Main Authors: Kelf, T A, Sugawara, Y, Baumberg, J J, Abdelsalam, M, Bartlett, P N
Format: Article
Language:English
Subjects:
Bonding strength
Dispersion
Mathematical morphology
Metal surfaces
Nanostructure
Plasmons
Self-assembly
Online Access:Get full text
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Summary:Nanostructured metal surfaces 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 reveal the spectral dispersion, from which we identify the presence of both delocalized Bragg- and localized Mie-plasmons. These couple strongly producing bonding and anti-bonding mixed plasmons with anomalous dispersion properties. Appropriate plasmon engineering of the void morphology selects the plasmon spatial and spectral positions, allowing these plasmonic crystal films to be optimised for a wide range of sensing applications.
ISSN:2331-8422
DOI:10.48550/arxiv.0505061