Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

A novel low-cost pre-concentrator concept to boost sensitivity and selectivity of gas sensor systems

 
: Schütze, A.; Leidinger, M.; Schmitt, B.; Sauerwald, T.; Rieger, M.; Alepee, C.

:

Institute of Electrical and Electronics Engineers -IEEE-:
IEEE Sensors 2015. Proceedings : 1-4 November 2015, Busan, South Korea
Piscataway, NJ: IEEE, 2015
ISBN: 978-1-4799-8203-5
ISBN: 978-1-4799-8202-8
4 S.
Conference "Sensors" <2015, Busan>
Englisch
Konferenzbeitrag
Fraunhofer ICT ()

Abstract
Several highly relevant applications for gas sensor systems cannot be adequately addressed today due to the limited sensitivity and selectivity of available low-cost sensors. We present a novel approach to simultaneously boost sensitivity and selectivity by using low-cost, selective micro pre-concentrators (μPC) to accumulate target molecules. Micromachined Si hotplates coated with Molecular Imprinted Polymer (MIP) or Metal Organic Framework (MOF) layers are used as μPC and heated to release the adsorbed target molecules. The μPC is mounted in a small housing adjacent to a micro gas sensor to achieve an effective gas transfer. By combining several μPCs with broadband sensors, this simple device can detect several gases with unrivalled sensitivity and selectivity.

: http://publica.fraunhofer.de/dokumente/N-418335.html