Hydrogel coated fiber Bragg grating based chromium sensor

P. V.N. Kishore, Sai Shankar Madhuvarasu, Kishore Putha, Satyanarayana Moru, K. Vengatajalabathy Gobi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

The present article reports a hydrogel coated Fiber Bragg Grating (FBG) based sensor for chromium metal ion detection. The presence of chromium metal ion in environmental water causes many toxic effects both on humans and animals. The inability of sensing traces of chromium ions is still remains a challenging problem for decades, as the Chromium exists in the environment in different oxidation states. This Paper discusses a chemo-mechanical-optical sensing approach for sensing harmful Chromium ions in environmental water. Fiber Bragg Grating is functionalized with a stimulus responsive hydrogel which swells or deswells depending on ambient chromium ion concentrations. This volume change of the hydrogels causes a bragg shift of the FBG peak. Different peak shifting's, corresponding to different concentrations of the Cr ion concentrations, can be considered as a measure for quantifying traces of chromium ions. Hydrogel network cross-linked with (3-Acrylamidopropyl)-trimethylammonium chloride (ATAC) was synthesized and coated on FBG by dip coating method. Chromium ion concentrations up to ppm (parts per million) can be sensed by this technique.

Original languageEnglish
Title of host publicationOptical Sensing and Detection IV
EditorsFrancis Berghmans, Anna G. Mignani
PublisherSPIE
ISBN (Electronic)9781510601444
DOIs
StatePublished - 2016
Externally publishedYes
EventOptical Sensing and Detection IV - Brussels, Belgium
Duration: 3 Apr 20167 Apr 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9899
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOptical Sensing and Detection IV
Country/TerritoryBelgium
CityBrussels
Period3/04/167/04/16

Bibliographical note

Publisher Copyright:
© 2016 SPIE.

Keywords

  • Chromium sensing
  • Fiber Bragg Grating
  • Fiber optic Chromium Sensor
  • Hydrogel
  • Swelling and deswelling
  • metal ion sensing

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