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Publication Detail
Evaluating Zeolite-Modified Sensors: towards a faster set of chemical sensors
  • Publication Type:
    Conference
  • Authors:
    Berna AZ, Vergara A, Trincavelli M, Huerta R, Afonja A, Parkin IP, Binions R, Trowell S
  • Publisher:
    AMER INST PHYSICS
  • Publication date:
    2011
  • Pagination:
    50, 52
  • Published proceedings:
    OLFACTION AND ELECTRONIC NOSE: PROCEEDINGS OF THE 14TH INTERNATIONAL SYMPOSIUM ON OLFACTION AND ELECTRONIC NOSE
  • Volume:
    1362
  • Editors:
    Gouma P
  • ISBN-13:
    978-0-7354-0920-0
  • Name of conference:
    14th International Symposium on Olfaction and Electronic Nose
  • Conference place:
    Rockefeller Univ, New York, NY
  • Conference start date:
    02/05/2011
  • Conference finish date:
    05/05/2011
  • Print ISSN:
    0094-243X
  • Language:
    EN
  • Keywords:
    Zeolite-modified CTO gas sensors, e-nose, transient response, signal processing
Abstract
The responses of zeolite-modified sensors, prepared by screen printing layers of chromium titanium oxide (CTO), were compared to unmodified tin oxide sensors using amplitude and transient responses. For transient responses we used a family of features, derived from the exponential moving average (EMA), to characterize chemo-resistive responses. All sensors were tested simultaneously against 20 individual volatile compounds from four chemical groups. The responses of the two types of sensors showed some independence. The zeolite-modified CTO sensors discriminated compounds better using either amplitude response or EMA features and CTO-modified sensors also responded three times faster.
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