Odor sensing system using ball SAW devices

T. Nakamoto, K. Aoki, T. Ogi, S. Akao, N. Nakaso

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


In this study, we have developed an odor sensing system using an array of ball SAW devices and pattern recognition technique. High sensitivity can be expected since SAW propagation length utilized for sensing is long due to multiple round trips in spite of its small size. An atomizer was used to realize uniform coating over a ball SAW device. The experiment on discrimination among apple, pineapple and orange flavors was successfully performed using four ball SAW devices coated with different films even if the sensor array was exposed to odors with different concentrations. Moreover, the change of the attenuation loss due to odor adsorption was measured together with its phase change. The change of the attenuation loss enhanced the pattern separation in some cases.

Original languageEnglish
Pages (from-to)386-390
Number of pages5
JournalSensors and Actuators, B: Chemical
Issue number1
Publication statusPublished - 2008 Mar 14
Externally publishedYes


  • Atomizer
  • Flavor identification
  • Odor sensing system
  • Sensor array: Ball SAW device
  • Viscoelastic effect

ASJC Scopus subject areas

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


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