Design of a very large chemical sensor system for mimicking biological olfaction

Research output: Contribution to journalArticle

  • Authors:
  • R. Beccherelli
  • E. Zampetti
  • S. Pantalei
  • M. Bernabei
  • K. C. Persaud

Abstract

Olfactory receptor neurons in the mammalian olfactory system transduce the odour information into electrical signals and project these into the olfactory bulb. In the biological system the huge redundancy and the massive convergence of the olfactory receptor neurons to the olfactory bulb are thought to enhance the sensitivity and selectivity of the system. To explore this concept a polymeric chemical sensor array consisting of 216 (65,536) sensors comprising tens of different types will be built in the frame of the FP7 NEUROCHEM project. To interface such a large sensor array, a topological array configuration with n rows and m columns has been adopted in order to reduce the total wiring connections to n + m. A detailed numerical analysis of the electrical crosstalk deriving from such a configuration has been carried out for elucidating advantages and limitations of the scanning algorithm. A prototype of the transducing array has been designed and an electronic scanning system capable of reading the 65,536 sensing elements array has been realized. © 2009 Elsevier B.V. All rights reserved.

Bibliographical metadata

Original languageEnglish
Pages (from-to)446-452
Number of pages6
JournalSensors and Actuators B: Chemical: international journal devoted to research and development of physical and chemical transducers
Volume146
Issue number2
DOIs
Publication statusPublished - 29 Apr 2010