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Development of a High-Throughput Impedance Spectroscopy Screening System (HT-IS) for Characterisation of Novel Nanoscaled Gas Sensing Materials

Published online by Cambridge University Press:  15 February 2011

Daniel Sanders ,
Maike Siemons ,
Tobias Koplin  and
Ulrich Simon
Daniel Sanders
Affiliation:
RWTH Aachen University, Institute of Inorganic Chemistry, 52056 Aachen, Germany
Maike Siemons
Affiliation:
RWTH Aachen University, Institute of Inorganic Chemistry, 52056 Aachen, Germany
Tobias Koplin
Affiliation:
RWTH Aachen University, Institute of Inorganic Chemistry, 52056 Aachen, Germany
Ulrich Simon
Affiliation:
RWTH Aachen University, Institute of Inorganic Chemistry, 52056 Aachen, Germany
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Abstract

A high-throughput work flow for rapid synthesis and testing of metal oxide nanoparticles for the discovery of new gas sensors of improved sensitivity and selectivity has been developed. The material libraries consist of nanoscaled metal oxide particles which are obtained either from pyrolysis of appropriate precursors or from polyol mediated synthesis. The design of a multielectrode array with 8x8 interdigital electrodes allows efficient and automated pipetting robot assisted sample preparation and material deposition. For characterisation of the sensor arrays high throughput impedance spectroscopy has been used. Test gas sequences and sensor temperatures can be varied. As an example, the properties of an In2O3-based library are introduced.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 876: Symposium A – Nanoporous and Nanostructured Materials for Catalysis, Sensor and Gas Separation Applications , 2005 , R6.1
Copyright
Copyright © Materials Research Society 2005

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