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A novel technique for rapid vapor detection using swelling polymer covered microstrip ring resonator

  • Amirreza Sohrabi
  • , Parmiss Mojir Shaibani
  • , Mohammad H. Zarifi
  • , Mojgan Daneshmand
  • , Thomas Thundat
  • University of Alberta

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

38 Scopus citations

Abstract

A state of the art technique is presented to enable the use of a planar RF resonator in Volatile Organic Compound (VOC) vapors detection as a simple and low cost sensor platform. In the proposed solution, swelling polymer (polydimethylsiloxane; PDMS) film is deposited on top of a Microstrip ring resonator. At the exposure of the PDMS layer to various concentrations of VOCs such as ethanol and acetone, the PDMS layer adsorbs the vapors. This results in a change in the PDMS thickness and permittivity, which is then detected by a shift in the resonance frequency of the resonator. It is believed that the combination of swelling polymers and the Microstrip resonators can pave the way towards application of planar RF resonators for gas phase detection.

Original languageEnglish
Title of host publication2014 IEEE MTT-S International Microwave Symposium, IMS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479938698
DOIs
StatePublished - 2014
Event2014 IEEE MTT-S International Microwave Symposium, IMS 2014 - Tampa, FL, United States
Duration: Jun 1 2014Jun 6 2014

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X

Conference

Conference2014 IEEE MTT-S International Microwave Symposium, IMS 2014
Country/TerritoryUnited States
CityTampa, FL
Period06/1/1406/6/14

Keywords

  • Chemical sensor
  • gas detectors
  • microwave sensors
  • polymer swelling
  • RF resonator

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