Deposition of organic molecules on gold nanoantennas for sensing

Jharna Paul*, Scott G. McMeekin, Richard M. De La Rue, Nigel P. Johnson

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

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 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.
Original languageEnglish
Title of host publicationMetamaterials XI
EditorsPeter Markos, Tomasz Szoplik, Vladimir Kuzmiak
PublisherSPIE
Volume10227
ISBN (Electronic)9781510609563
ISBN (Print)9781510609556
DOIs
Publication statusPublished - 16 May 2017
Event SPIE Optics + Optoelectronics 2017 - Prague, Czech Republic
Duration: 26 Apr 201727 Apr 2017

Conference

Conference SPIE Optics + Optoelectronics 2017
Country/TerritoryCzech Republic
CityPrague
Period26/04/1727/04/17

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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