Lahiri, B., McMeekin, S.G., De La Rue, R.M. and Johnson, N.P. (2013) Enhanced fano resonance of organic material films deposited on arrays of asymmetric split-ring resonators (A-SRRs). Optics Express, 21(8), pp. 9343-9352. (doi: 10.1364/OE.21.009343)
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Abstract
Depositing very thin organic films on the surface of arrays of asymmetric split-ring resonators (A-SRRs) produces a shift in their resonance spectra that can be utilized for sensitive analyte detection. Here we show that when poly-methyl-methacrylate (PMMA) is used as an organic probe (analyte) on top of the A-SRR array, the phase and amplitude of a characteristic molecular Fano resonance associated with a carbonyl bond changes according to the spectral positions of the trapped mode resonance of the A-SRRs and their plasmonic reflection peaks. Furthermore, we localize blocks of PMMA at different locations on the A-SRR array to determine the effectiveness of detection of very small amounts of non-uniformly distributed analyte.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Johnson, Dr Nigel and De La Rue, Professor Richard and Lahiri, Dr Basudev |
Authors: | Lahiri, B., McMeekin, S.G., De La Rue, R.M., and Johnson, N.P. |
College/School: | College of Science and Engineering > School of Engineering College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
Journal Name: | Optics Express |
Publisher: | Optical Society of America |
ISSN: | 1094-4087 |
Copyright Holders: | Copyright © 2013 OSA |
First Published: | First published in Optics Express 21(8):9343-9352 |
Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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