Enhanced fano resonance of organic material films deposited on arrays of asymmetric split-ring resonators (A-SRRs)

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
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Johnson, Dr Nigel and Lahiri, Dr Basudev and De La Rue, Professor Richard
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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