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Vol. 91, Issue 4, April 2008, pp.116-126




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



Department of Chemistry & Physics

University of North Florida, 1 UNF Drive

Jacksonville, Florida 32224, USA

Phone: 904-620-1670, E-mail: npatel@unf.edu



Received: 17 March 2008   /Accepted: 21 April 2008   /Published: 30 April 2008


Abstract: 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.


Keywords: Indium-tin oxide thin films, electronic nose, odor sensors, quartz crystal microbalance, Principal Component Analysis


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