Optimization of spectrophone performance for quartz-enhanced photoacoustic spectroscopy

Yingchun Cao, Wei Jin, Hoi Lut Ho

Research output: Journal article publicationJournal articleAcademic researchpeer-review

27 Citations (Scopus)


We numerically investigate the effects of spectrophone parameters, including the operating acoustic frequency, the relative position of the quartz tuning fork and the excitation laser beam, the gap between the resonant tubes and the tuning fork, and the diameter and length of the resonant tubes, on the performance of gas sensors based on quartz-enhanced photoacoustic spectroscopy. A pair of rigid tubes with inner diameter of 0.2 mm and length of 5.1 mm, placed 0.6 mm down from the opening and 20 μm away from the edge of the tuning fork, is suggested for optimal performance.
Original languageEnglish
Pages (from-to)24-30
Number of pages7
JournalSensors and Actuators, B: Chemical
Publication statusPublished - 1 Nov 2012


  • Acoustic microresonator
  • Gas detection
  • Photoacoustic spectroscopy
  • Quartz tuning fork
  • Spectrophone

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry
  • Electrical and Electronic Engineering


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