Real-time ozone detection based on a microfabricated quartz crystal tuning fork sensor

Rui Wang, Francis Tsow, Xuezhi Zhang, Jhih Hong Peng, Erica Forzani, Yongsheng Chen, Ohn C. Crittenden, Hugo Destaillats, Nongjian Tao

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


A chemical sensor for ozone based on an array of microfabricated tuning forks is described. The tuning forks are highly sensitive and stable, with low power consumption and cost. The selective detection is based on the specific reaction of the polymer with ozone. With a mass detection limit of ~2 pg/mm2 and response time of 1 second, the sensor coated with a polymer sensing material can detect ppb-level ozone in air. The sensor is integrated into a miniaturized wearable device containing a detection circuit, filtration, battery and wireless communication chip, which is ideal for personal and microenvironmental chemical exposure monitoring.

Original languageEnglish (US)
Pages (from-to)5655-5663
Number of pages9
Issue number7
StatePublished - Jul 2009


  • Environmental
  • Epidemiological
  • Ozone
  • Population
  • Real-time
  • Selective
  • Sensitive
  • Sensor
  • Wearable
  • Wireless

ASJC Scopus subject areas

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


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