Sensors & Transducers (Apr 2008)

Odor Sensing with Indium Tin Oxide Thin Films on Quartz Crystal Microbalance

  • Nirmal PATEL,
  • Jay HUEBNER,
  • Jason SAREDY,

Journal volume & issue
Vol. 91, no. 4
pp. 116 – 126


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Odor sensors were fabricated by depositing nanocrystalline Indium Tin Oxide thin films on an AT-cut quartz crystals. These sensors were tested with odors from different groups of foods, including fruits, cheeses, and wines. The change in frequency characteristics and surface resistance as a function of time was measured for each. Principal Component Analysis showed intuitive groupings of the odors tested.