Nanoengineered thin films of copper for the optical monitoring of urine - A comparative study of the helical and columnar nanostructures

Masih Ghasemi, Pankaj Kumar Choudhury, Arash Dehzangi

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The use of nanoengineered metallic complex mediums in the monitoring of urine is investigated in this study. As to the mediums used, nanoscaled thin films comprised of (i) copper nanohelix structures of two different numbers of helical turns and (ii) columnar thin films of copper nanorods of two different slanting angles grown over planar glass surface - a dielectric medium - are taken into account. Turbadar-Kretschmann-Raether (TKR) configuration is used to couple light with the metallic nanoengineered thin films, and the absorption spectra are monitored corresponding to two different optical wavelengths. The void regions in nanoengineered metallic films are filled up with urine as the analyte, which causes to alter the constitutive properties, resulting thereby shifts in the peaks in absorption spectra. Prominent shifts in absorption peaks corresponding to nanoengineered mediums infiltrated with urine essentially confirm prudent optical sensing characteristics of the devices under consideration.

Original languageEnglish
Pages (from-to)2321-2329
Number of pages9
JournalJournal of Electromagnetic Waves and Applications
Volume29
Issue number17
DOIs
Publication statusPublished - 1 Nov 2015

Fingerprint

urine
Copper
Nanostructures
Metallic films
Thin films
copper
Monitoring
Absorption spectra
thin films
absorption spectra
shift
Nanorods
nanorods
voids
Glass
Wavelength
glass
causes
configurations
wavelengths

Keywords

  • optical biosensor
  • prism-coupled sensing
  • surface waves

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy(all)

Cite this

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N2 - The use of nanoengineered metallic complex mediums in the monitoring of urine is investigated in this study. As to the mediums used, nanoscaled thin films comprised of (i) copper nanohelix structures of two different numbers of helical turns and (ii) columnar thin films of copper nanorods of two different slanting angles grown over planar glass surface - a dielectric medium - are taken into account. Turbadar-Kretschmann-Raether (TKR) configuration is used to couple light with the metallic nanoengineered thin films, and the absorption spectra are monitored corresponding to two different optical wavelengths. The void regions in nanoengineered metallic films are filled up with urine as the analyte, which causes to alter the constitutive properties, resulting thereby shifts in the peaks in absorption spectra. Prominent shifts in absorption peaks corresponding to nanoengineered mediums infiltrated with urine essentially confirm prudent optical sensing characteristics of the devices under consideration.

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