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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/12108

Title: A silicon-based multi-sensor chip for monitoring of fermentation processes
Authors: Baecker, M.
Pouyeshman, S.
Schnitzler, Th.
Poghossian, A.
WAGNER, Patrick
Biselli, M.
Schoening, M. J.
Issue Date: 2011
Abstract: This paper describes the design and characterization of a silicon based sensor chip for monitoring of fermentation processes. The sensor chip consists of three sensors using different transducer principles. A capacitive electrolyte-insulator-semiconductor (EIS) field-effect structure with Ta(2)O(5) as gate material was utilized as pH sensor. An electrolyte conductivity sensor was realized by measuring the impedance between two interdigitated electrodes (IDE). A platinum thermistor was included for temperature measurements. The EIS sensor was integrated into a bioreactor and successfully used for an inline pH measurement. The layout of the IDE has been optimized with respect to a high cell constant and a wide detectable conductivity range. The integrated platinum thermistor allowed for temperature compensation of the electrolyte conductivity measurement. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Notes: Schoning, MJ (reprint author),[Backer, M; Pouyeshman, S; Schnitzler, T; Poghossian, A; Biselli, M; Schoning, MJ] Aachen Univ Appl Sci, Inst Nano & Biotechnol, D-52428 Julich, Germany [Backer, M; Poghossian, A; Biselli, M; Schoning, MJ] Res Ctr Julich, Peter Gruenberg Inst PGI 8, D-52425 Julich, Germany [Wagner, P] Hasselt Univ, Inst Mat Res, B-3590 Diepenbeek, Belgium schoening@fh-aachen.de
URI: http://hdl.handle.net/1942/12108
DOI: 10.1002/pssa.201001139
ISI #: 000292945800026
ISSN: 1862-6300
Category: A1
Type: Journal Contribution
Validation: ecoom, 2012
Appears in Collections: Research publications

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