Mapping the sensitivity of split ring resonators using a localized analyte

Sharp, G. J., Vilhena, H., Lahiri, B., McMeekin, S. G., De La Rue, R. M. and Johnson, N. P. (2016) Mapping the sensitivity of split ring resonators using a localized analyte. Applied Physics Letters, 108(25), 251105. (doi:10.1063/1.4954797)

[img]
Preview
Text
120184.pdf - Published Version
Available under License Creative Commons Attribution.

1MB

Abstract

Split ring resonator (SRR) based metamaterials have frequently been demonstrated for use as optical sensors of organic materials. This is made possible by matching the wavelength of the SRR plasmonic resonance with a molecular resonance of a specific analyte, which is usually placed on top of the metal structure. However, systematic studies of SRRs that identify the regions that exhibit a high electric field strength are commonly performed using simulations. In this paper we demonstrate that areas of high electric field strength, termed “hot-spots,” can be found by localizing a small quantity of organic analyte at various positions on or near the structure. Furthermore, the sensitivity of the SRR to the localized analyte can be quantified to determine, experimentally, suitable regions for optical sensing.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Johnson, Dr Nigel and Sharp, Mr Graham and Lahiri, Dr Basudev and De La Rue, Professor Richard
Authors: Sharp, G. J., Vilhena, H., Lahiri, B., McMeekin, S. G., De La Rue, R. M., and Johnson, N. P.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Applied Physics Letters
Publisher:A I P Publishing
ISSN:0003-6951
ISSN (Online):1077-3118
Published Online:23 June 2016
Copyright Holders:Copyright © 2016 The Authors
First Published:First published in Applied Physics Letters 108(25):251105
Publisher Policy:Reproduced under a Creative Commons License

University Staff: Request a correction | Enlighten Editors: Update this record

Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
584861EPSRC Doctoral Training Grant 2011-2015Mary Beth KneafseyEngineering & Physical Sciences Research Council (EPSRC)EP/J500434/1VICE PRINCIPAL RESEARCH & ENTERPRISE