Highly sensitive superhydrophobic Ag nanorods array substrates for surface enhanced fluorescence studies

We report a facile method to fabricate highly sensitive superhydrophobic Ag nanorods (AgNR) arrays based surface enhanced fluorescence spectroscopy (SEFS) substrates using glancing angle deposition technique at a substrate temperature of 133 K and then subsequent coating of heptadecafluoro-1-decanet...

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Bibliographic Details
Published in:Applied physics letters 2014-01, Vol.104 (2)
Main Authors: Kumar, Samir, Goel, Pratibha, Singh, Dhruv P., Singh, J. P.
Format: Article
Language:English
Subjects:
Applied physics
Arrays
Biosensors
Fluorescence
Hydrophobic surfaces
Hydrophobicity
Nanorods
Rhodamine 6G
Silver
Substrates
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Summary:We report a facile method to fabricate highly sensitive superhydrophobic Ag nanorods (AgNR) arrays based surface enhanced fluorescence spectroscopy (SEFS) substrates using glancing angle deposition technique at a substrate temperature of 133 K and then subsequent coating of heptadecafluoro-1-decanethiol (HDFT) molecules. The SEFS enhancement behaviour of these substrates was determined by using aqueous solution of Rhodamine 6G. The HDFT coated superhydrophobic AgNR arrays SEFS substrates exhibit more then 3-fold fluorescence signal enhancement than conventional AgNR films. These HDFT coated superhydrophobic AgNR SEFS substrates based sensors may find application for the purpose of trace analysis and biosensing.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4861836