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Proceedings Paper

Deposition of organic molecules on gold nanoantennas for sensing
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Paper Abstract

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.

Paper Details

Date Published: 16 May 2017
PDF: 8 pages
Proc. SPIE 10227, Metamaterials XI, 102270Z (16 May 2017); doi: 10.1117/12.2269937
Show Author Affiliations
Jharna Paul, Univ. of Glasgow (United Kingdom)
Scott G. McMeekin, Glasgow Caledonian Univ. (United Kingdom)
Richard M. De La Rue, Univ. of Glasgow (United Kingdom)
Nigel P. Johnson, Univ. of Glasgow (United Kingdom)

Published in SPIE Proceedings Vol. 10227:
Metamaterials XI
Vladimír Kuzmiak; Peter Markos; Tomasz Szoplik, Editor(s)

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