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

Nirmal PATEL, Jay HUEBNER, Jason SAREDY, Brian STADELMAIER
2008 Sensors & Transducers  
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.
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