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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 | Publisher: | WILEY-BLACKWELL | Source: | PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 208(6). p. 1364-1369 | 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 | Keywords: | electrochemical sensor; electrolyte conductivity; field-effect; process monitoring;electrochemical sensor; electrolyte conductivity; field-effect; process monitoring | Document URI: | http://hdl.handle.net/1942/12108 | ISSN: | 1862-6300 | e-ISSN: | 1862-6319 | DOI: | 10.1002/pssa.201001139 | ISI #: | 000292945800026 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2012 |
Appears in Collections: | Research publications |
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