Conductive polymer‐carbon black composites‐based sensor arrays for use in an electronic nose

Polymer‐carbon black composites are a new class of chemical detecting sensors used in electronic noses. These composites are prepared by mixing carbon black and polymer in an appropriate solvent. The mixture is deposited on a substrate between two metal electrodes, whereby the solvent evaporates leaving a composite film. Arrays of these chemiresistors, made from a chemically diverse number of polymers and carbon black, swell reversibly, inducing a resistance change on exposure to chemical vapors. These arrays generate a pattern that is a unique fingerprint for the vapor being detected. With the aid of algorithms these patterns are processed and recognized. These arrays can detect and discriminate between a large number of chemical vapors.

[1]  K. Persaud,et al.  Analysis of discrimination mechanisms in the mammalian olfactory system using a model nose , 1982, Nature.

[2]  B. F. Pain,et al.  Assessment of Odours from Livestock Wastes by a Photoionization Detector, an Electronic Nose, Olfactometry and Gas Chromatography-Mass Spectrometry , 1995 .

[3]  F. Winquist,et al.  Electronic nose for microbial quality classification of grains. , 1997, International journal of food microbiology.

[4]  J W Gardner and P N Bartlett,et al.  Electronic Noses: Principles and Applications , 1999 .

[5]  J. D. Hartman,et al.  AN ELECTRONIC ANALOG FOR THE OLFACTORY PROCESSES * † , 1964, Annals of the New York Academy of Sciences.

[6]  Julian W. Gardner,et al.  Preliminary investigation of breath sampling as a monitor of health in dairy cattle , 1997 .

[7]  Bruce Slutsky,et al.  Chemometrics: A Practical Guide By Kenneth R. Beebe, Randy J. Pell, and Mary Beth Seasholtz. Wiley-Interscience Series on Laboratory Automation. John Wiley & Sons: New York, 1998, xi + 348 pp, ISBN 0-471-12451-6 , 1998, Journal of chemical information and computer sciences.

[8]  H. V. Shurmer,et al.  The Design of an Artificial Olfactory System , 1990 .

[9]  Nathan S. Lewis,et al.  Progress in the development of an electronic nose using arrays of chemically sensitive carbon black-polymer resistors , 1998, Defense, Security, and Sensing.

[10]  Ingemar Lundström,et al.  A new pollen detection method based on an electronic nose , 1997 .

[11]  Hans Sundgren,et al.  Electronic nose for odor classification of grains , 1996 .

[12]  Nathan S. Lewis,et al.  Array-based vapor sensing using chemically sensitive, carbon black-Polymer resistors , 1996 .