SAW sensors of organophosphorous compound with no humidity interference

Yu Tang Shen, Chi Yen Shen, Long Wu, Cheng Liang Huang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Surface acoustic wave (SAW) sensors of organophosphorous compounds with no humidity interference are designed. ST-cutX quartz and fluoropolyol (FPOL) film in glassy-rubbery phase are the substrate and chemical interface of the sensors, respectively. The velocity shift and attenuation change increase with the thickness of FPOL. The velocity shift linearly varies with operating frequency when FPOL film is less than 0.02 μm. The operating frequency of the SAW sensor is chosen to be less than 180 MHz for oscillation of sensors. The operating frequency of the SAW sensor can be chosen carefully to induce negligible interference due to humidity. The optimum operating frequency with negligible humidity interference declines as the relative humidity increases in a common environment.

Original languageEnglish
Pages (from-to)1358-1362
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume42
Issue number3
Publication statusPublished - 2003 Mar 1

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'SAW sensors of organophosphorous compound with no humidity interference'. Together they form a unique fingerprint.

  • Cite this