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Thickness-shear mode acoustic wave sensors and flow-injection analysis

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

A feasibility study of the combination of the flow-injection analysis (FIA) technique with the piezoelectric acoustic wave sensor (thickness-shear mode, TSM) is described. Flow-injection systems provide a method to relate the hydrodynamic response of the sensor to the concentration-time profile of the analyte produced by the dispersion behaviour of sample zones. Network analysis of the TSM sensor generates multi-dimensional information on the bulk properties of the liquid sample and surface properties at the liquid/solid interface. The relationship between acoustic energy transmission and the interfacial structure, viscosity, density and dielectric constant of the analyte is discussed. The FIA-TSM system provides a rapid, reproducible detection method with enhanced sensitivity and scope. © 1992.
Original languageEnglish
Pages (from-to)167-175
JournalAnalytica Chimica Acta
Volume269
Issue number2
DOIs
Publication statusPublished - 20 Nov 1992
Externally publishedYes

Research Keywords

  • Acoustic methods
  • Acoustic wave sensor
  • Flow injection
  • Piezoelectric sensors

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