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Sensor Arrays Using Conducting Polymers for an Artificial Nose

  • K. C. Persaud
  • P. Pelosi
Chapter
Part of the NATO ASI Series book series (NSSE, volume 212)

Abstract

We have analyzed the biological olfactory system in order to determine the characteristics of chemical sensors that may be mimicked by electronic means. New organic semiconductors based on poly(pyrrole) and derivatives have been synthesised and incorporated into sensor arrays. These polymers display responses to gases and odours dependent also on stereochemical parameters of the volatile molecules. The arrays are now finding practical applications in the food, beverage and environmental monitoring areas. We are carrying out the synthesis of new polymers capable of more specific discrimination of odour mixtures.

Keywords

Sensor Array Electronic Nose Human Nose Green Coffee Bean Quadratic Discriminant Function 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    A. Dall’ Olio, G. Dascola, V. Varacca and V. Bocchi, Electron paramagnetic resonance and conductivity of an electrolyte oxypyrrole [(pyrrole polymer)] black, C. R. Acad. Sci., Paris Ser. C, 267 (1968) 433–435.Google Scholar
  2. 2.
    A. F. Diaz, K. K. Kanazawa and G. P. Gardini, Electropolymerisation of pyrrole, J. Chem. Soc. Chem. Commun., (1979) 635-636.Google Scholar
  3. 3.
    T. Skotheim, Handbook of Conducting Polymers, Marcel Dekker, New York, 1986.Google Scholar
  4. 4.
    W. Wernet, M. Monkenbusch and G. Wegner, A new series of conducting polymers with layered structure: polypyrrole n-alkylsulphates and n-alkylsulfonates, Makromol. Chem. Rapid. Commun., 5 (1984) 157–164.CrossRefGoogle Scholar
  5. 5.
    L. F. Warren and D. P. Anderson, Polypyrrole films from aqueous electrolytes, J. Electrochem. Soc., 134 (1987) 101–105.CrossRefGoogle Scholar
  6. 6.
    P. Pfluger and G. B. Street, Chemical, electronic and structural properties of conducting heterocyclic polymers: a view by XPS, J. Chem. Phys., 80 (1984) 544–553.CrossRefGoogle Scholar
  7. 7.
    H. Lecavelier, F. Devreux, M. Nechtschein and G. Bidan, NMR studies in polypyrrole, Mol. Cryst. Liq. Cryst., 118 (1985) 183–186.CrossRefGoogle Scholar
  8. 8.
    A. Nazzal and G. B. Street, Molecular weight determination of pyrrole based polymers, J. Chem. Soc. Chem. Commun., (1984) 83-84.Google Scholar
  9. 9.
    K. Yakushi, L. J. Lauchlan, T. C. Clarke and G. B. Street, Optical study of polypyrrole perchlorate, J. Chem. Phys., 79 (1983) 4774–4778.CrossRefGoogle Scholar
  10. 10.
    K. M. Cheung, D. Bloor and G. C. Stevens, Characterisation of polypyrrole electropolymerised on different electrodes Polymer 29 (1988) 1709–1717.CrossRefGoogle Scholar
  11. 11.
    G. R. Mitchell, R. Cywinski, S. Mondai and S. J. Sutton, The influence of molecular organisation on charge transport in electrochemically prepared polypyrrole films, J. Phys. D. Appl. Phys, 22 (1989) 1231–1234.CrossRefGoogle Scholar
  12. 12.
    J. C. Scott, P. Pfluger, M. T. Kroundbi and G. B. Street, Electron spin resonance studies of pyrrole polymers: evidence for bipolarons, Phys. Rev. B., Condens. Matt., 28 (1983) 2140–2145.CrossRefGoogle Scholar
  13. 13.
    J. L Bredas, J. C. Scott, K. Yakushi and G. B. Street, Polarons and bipolarons in polypyrrole: Evolution of the band structure and optical spectrum upon doping, Phys. Rev. B., 30 (1984) 1023–1025.CrossRefGoogle Scholar
  14. 14.
    F. Genoud, M. Guglielmi, M. Nechtschein, E. Genies and M. Salmon, ESR study of electrochemical doping in the conducting polymer polypyrrole. Phys. Rev. Lett., 55 (1985) 118–121.CrossRefGoogle Scholar
  15. 15.
    K. C. Persaud and G. H. Dodd, Analysis of discrimination mechanisms in the mammalian olfactory system using a model nose, Nature, 299 (1982) 352–354.CrossRefGoogle Scholar
  16. 16.
    K. C. Persaud and P. Pelosi, An approach to an artificial nose, Trans. Am. Soc.Artif. Organs, 31 (1985) 297–300.Google Scholar
  17. 17.
    P. Pelosi and K. C. Persaud, Gas sensors: Towards an artificial nose. in P. Dario (ed.), Sensors and Sensory Systems for Advanced Robots, NATO ASI Series F, Springer-Verlag, Berlin, 1988, p. 361.CrossRefGoogle Scholar
  18. 18.
    K. C. Persaud, Odour detection using sensor arrays, Analyt. Proc., 28 (1991) 339–341.CrossRefGoogle Scholar
  19. 19.
    R. Muller, Multisensor Signal Processing, in Sensors: A comprehensive survey. W. Gopel, J. Hesse & J. N. Zemel (eds.), Fundamentals and General Aspects, Vol. 1., VCH, Weinheim, Germany, 1989 pp. 314-340.Google Scholar
  20. 20.
    W. S. McCulloch and W. Pitts, A logical calculus of the ideas immanent in nervous activity, Bull. Math. Biophys., 5 (1943) 115–133.MathSciNetzbMATHCrossRefGoogle Scholar
  21. 21.
    D. E. Rumelhart, G. E. Hinton, R. J. Williams, Learning representations by back-propagating errors, Nature, 323 (1986) 533–536.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 1992

Authors and Affiliations

  • K. C. Persaud
    • 1
  • P. Pelosi
    • 2
  1. 1.DIAS, UMISTManchesterUK
  2. 2.Istituto di Industrie AgrarieUniversity of PisaItaly

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