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Plasmon enhanced fluorescence studies from aligned gold nanorod arrays modified with SiO2 spacer layers
Date Issued
2015-05
Date Available
2017-02-06T13:12:40Z
Abstract
Here we demonstrate that quasi self-standing Au nanorod arrays prepared with plasma polymerisation deposited SiO2 dielectric spacers support surface enhanced fluorescence (SEF) while maintaining high signal reproducibility. We show that it is possible to find a balance between enhanced radiative and non-radiative decay rates at which the fluorescent intensity is maximized. The SEF signal optimised with a 30 nm spacer layer thickness, showed a 3.5-fold enhancement with a signal variance of <15% thereby keeping the integrity of the nanorod array. We also demonstrate the decreased importance of obtaining resonance conditions when LSPR is positioned within the spectral region of Au interband transitions. Procedures for further increasing the SEF enhancement factor are also discussed.
Sponsorship
Science Foundation Ireland
Other Sponsorship
Engineering and Physical Sciences Research Council (EPSRC - UK)
Type of Material
Journal Article
Publisher
AIP Publishing
Journal
Applied Physics Letters
Volume
106
Issue
18
Copyright (Published Version)
2015 AIP Publishing LLC
Language
English
Status of Item
Peer reviewed
This item is made available under a Creative Commons License
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