A nano-thin film-based prototype QCM sensor array for monitoring human breath and respiratory patterns

Roman Selyanchyn, Shunichi Wakamatsu, Kenshi Hayashi, Seung Woo Lee

Research output: Contribution to journalArticle

19 Citations (Scopus)


Quartz crystal microbalance (QCM) sensor array was developed for multi-purpose human respiration assessment. The sensor system was designed to provide feedback for human respiration. Thorough optimization of measurement conditions: air flow, temperature in the QCM chamber, frequency measurement rate, and electrode position regarding to the gas flow—was performed. As shown, acquisition of respiratory parameters (rate and respiratory pattern) could be achieved even with a single electrode used in the system. The prototype system contains eight available QCM channels that can be potentially used for selective responses to certain breath chemicals. At present, the prototype machine is ready for the assessment of respiratory functions in larger populations in order to gain statistical validation. To the best of our knowledge, the developed prototype is the only respiratory assessment system based on surface modified QCM sensors.

Original languageEnglish
Pages (from-to)18834-18850
Number of pages17
JournalSensors (Switzerland)
Issue number8
Publication statusPublished - Jul 31 2015


All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Biochemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering

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