Deposition of Organic Molecules on Gold Nanoantennas for Sensing

Paul, J. , McMeekin, S. G., De La Rue, R. M. and Johnson, N. P. (2017) Deposition of Organic Molecules on Gold Nanoantennas for Sensing. In: SPIE Optics + Optoelectronics: Metamaterials XI, Prague, Czech Republic, 24-27 Apr 2017, 102270Z. (doi: 10.1117/12.2269937)

151070.pdf - Accepted Version



The deposition of organic molecules on gold nanoantennas is reported through chemisorption for sensing in the midinfrared (mid-IR) spectral range. The specific nanostructures are gold asymmetric-split ring resonators (A-SRRs) based on circular-geometry with two different ‘arc’ lengths. The plasmonic resonant coupling technique was used to match the vibrational responses of the targeted molecules for their enhanced detection. Gold nanostructures are functionalised through chemisorption of octadecanethiol (ODT) in ethanol solution. The molecular vibrational responses were measured using a microscope coupled Fourier Transform Infrared (FTIR) spectroscopy. The experimental findings are closely supported using FDTD simulation. The modified nanoantennas surfaces are capable of supporting wide range of organic-sensing applications.

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Johnson, Dr Nigel and De La Rue, Professor Richard and Paul, Dr Jharna
Authors: Paul, J., 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
Copyright Holders:Copyright © 2017 SPIE
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
748271EPSRC- Institutional Sponsorship 2016 - University of GlasgowJonathan CooperEngineering and Physical Sciences Research Council (EPSRC)EP/P51133X/1VPO VICE PRINCIPAL RESEARCH & ENTERPRISE