Active 433 MHz-W UHF RF-powered chip integrated with a nanocomposite m-MWCNT/polypyrrole sensor for wireless monitoring of volatile anesthetic agent sevoflurane

Murthy Chavali, Tzu Hsuan Lin, Ren Jang Wu, Hsiang Ning Luk, Shih Lin Hung

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

Tiny remote sensors capable of monitoring gases and vapors are having greatest demand due to their potential applications in diverse research fields. In the present work, design and fabrication of an active wireless UHF (433 MHz) RF-powered sensing system for monitoring volatile organic compounds is presented. The developed sensor chip consists of a thin film of gas-responsive composite material, based on modified multiwalled carbon nanotubes (m-MWCNTs) and polypyrrole (Ppy), coated over two comb-like interdigitated gold electrodes. Wireless modules have been integrated with the chemical sensor chip (composite m-MWCNTs/Ppy) and RF components to detect volatile anesthetic agent, fluoromethyl 2,2,2,-trifluoro-1-(trifluoromethyl) ethyl ether (sevoflurane) is demonstrated.

Original languageEnglish
Pages (from-to)109-119
Number of pages11
JournalSensors and Actuators, A: Physical
Volume141
Issue number1
DOIs
StatePublished - 15 Jan 2008

Keywords

  • Chemical sensor
  • Fluoromethyl 2,2,2-trifluoro-1-(trifluoromethyl) ethyl ether
  • m-MWCNT
  • MWCNT
  • Polypyrrole
  • RF sensor
  • Sevoflurane
  • Ultane
  • Wireless

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