Electronic Tongue systems have been widely used during last decades, reaching an high level of performances in the detection and quantification of several matrices, such as for example waters, soft and alcoholic drinks. Next step in research is represented by the miniaturization of these systems: it is made possible by the integration of the knowledge on materials suitable for sensorial purpose and the silicon technology, which allows the development of micro-dimensioned sensors. In this work we report the development of a sensor array composed of 8 electro-polymerized porphyrin based membranes, with an active area exposed to liquid of 0.5 mm². The miniaturized system, integrated on a single silicon wafer and completed by read-out electronics, was firstly tested towards standard analytes and then applied on real white wine samples for the detection of some analytes mimicking wine defects, namely H₂S, SO₂ and CH₃CO₂H.

Date Published: 15 May 2007
PDF: 8 pages
Proc. SPIE 6589, Smart Sensors, Actuators, and MEMS III, 65891I (15 May 2007); doi: 10.1117/12.722019

Published in SPIE Proceedings Vol. 6589:
Smart Sensors, Actuators, and MEMS III
Thomas Becker; Carles Cané; N. Scott Barker, Editor(s)