Plasmon enhanced fluorescence studies from aligned gold nanorod arrays modified with SiO2 spacer layers
|Title:||Plasmon enhanced fluorescence studies from aligned gold nanorod arrays modified with SiO2 spacer layers||Authors:||Damm, Signe
Barry, James N.
Dowling, Denis P.
Rice, James H.
|Permanent link:||http://hdl.handle.net/10197/8320||Date:||May-2015||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.||Funding Details:||Science Foundation Ireland||Type of material:||Journal Article||Publisher:||AIP Publishing||Copyright (published version):||2015 AIP Publishing LLC||Keywords:||Gold;Nanorods;Fluorescence;Fluorescence spectra;Nanostructures||DOI:||10.1063/1.4919968||Language:||en||Status of Item:||Peer reviewed|
|Appears in Collections:||Mechanical & Materials Engineering Research Collection|
Physics Research Collection
Show full item record
This item is available under the Attribution-NonCommercial-NoDerivs 3.0 Ireland. No item may be reproduced for commercial purposes. For other possible restrictions on use please refer to the publisher's URL where this is made available, or to notes contained in the item itself. Other terms may apply.