Document Server@UHasselt >
Research >
Research publications >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/17048

Title: Multiparameter Sensor Chip with Barium Strontium Titanate as Multipurpose Material
Authors: HUCK, Christina
Poghossian, Arshak
Kerroumi, Iman
Schusser, Sebastian
BACKER, Matthias
Zander, Willi
Schubert, Jürgen
Buniatyan, Vahe V.
Martirosyan, Norayr W.
WAGNER, Patrick
Schöning, Michael J.
Issue Date: 2014
Citation: ELECTROANALYSIS, 26 (5), p. 980-987
Abstract: It is well known that biochemical and biotechnological processes are strongly dependent and affected by a variety of physico-chemical parameters such as pH value, temperature, pressure and electrolyte conductivity. Therefore, these quantities have to be monitored or controlled in order to guarantee a stable process operation, optimization and high yield. In this work, a sensor chip for the multiparameter detection of three physico-chemical parameters such as electrolyte conductivity, pH and temperature is realized using barium strontium titanate (BST) as multipurpose material. The chip integrates a capacitively coupled four-electrode electrolyte-conductivity sensor, a capacitive field-effect pH sensor and a thin-film Pt-temperature sensor. Due to the multifunctional properties of BST, it is utilized as final outermost coating layer of the processed sensor chip and serves as passivation and protection layer as well as pH-sensitive transducer material at the same time. The results of testing of the individual sensors of the developed multiparameter sensor chip are presented. In addition, a quasi-simultaneous multiparameter characterization of the sensor chip in buffer solutions with different pH value and electrolyte conductivity is performed. To study the sensor behavior and the suitability of BST as multifunctional material under harsh environmental conditions, the sensor chip was exemplarily tested in a biogas digestate.
Notes: [Huck, Christina; Poghossian, Arshak; Schusser, Sebastian; Backer, Matthias; Schoning, Michael J.] INB, D-52428 Julich, Germany. [Huck, Christina; Poghossian, Arshak; Schusser, Sebastian; Backer, Matthias; Zander, Willi; Schubert, Juergen; Schoning, Michael J.] PGI, D-52525 Julich, Germany. [Buniatyan, Vahe V.; Martirosyan, Norayr W.] State Engn Univ Armenia, Dept Microelectron & Biomed Devices, Yerevan 0009, Armenia. [Wagner, Patrick] Hasselt Univ, IMO, B-3590 Diepenbeek, Belgium. a.poghossian@fz-juelich.de
URI: http://hdl.handle.net/1942/17048
DOI: 10.1002/elan.201400076
ISI #: 000335997600012
ISSN: 1040-0397
Category: A1
Type: Journal Contribution
Validation: ecoom, 2015
Appears in Collections: Research publications

Files in This Item:

Description SizeFormat
published version2.04 MBAdobe PDF

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.