Very large chemical sensor array for mimicking biological olfaction

Beccherelli, Romeo and Zampetti, Emiliano and Pantalei, Simone and Bernabei, Manuele and Persaud, Krishna C. (2009) Very large chemical sensor array for mimicking biological olfaction. In: Olfaction and electronic nose, proceedings. AIP Conference Proceedings, 1137 . American Institute of Physics, Melville USA, pp. 155-158. ISBN 978-0-7354-0674-2

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Olfactory receptor neurons (ORN) in the mammalian olfactory system, transduce molecular properties of the odorants into electrical signals and project these into the olfactory bulb (OB). In the biological system several millions of receptor neurons of a few hundred types create redundancy and the massive convergence of the ORNs to the OB, is thought to enhance the sensitivity and selectivity of the system. To explore this concept, the NEUROCHEM project will build a polymeric chemical sensor array consisting of 216 (65536) sensors with tens of different types. To interface such a large sensor array, a topological array configuration with n rows and m columns, has been adopted, to reduce the total wiring connections to n+m. A method of addressing a single element in the array in isolation of the rest of the network has been developed. Over the array ten different conductive polymers with different sensing characteristics will be deposited by means of lectrodeposition and inkjet printing. A smaller prototype of 64 elements has been investigated and the results are here reported and discussed.

Item Type: Book Section
Subjects: 600 Tecnologia - Scienze applicate > 620 Ingegneria e attivita' affini
Depositing User: Matteo Viola
Date Deposited: 20 Dec 2012 09:59
Last Modified: 22 Mar 2013 14:18

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