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Reference type: Conference Proceeding
Authors: Sch�tzeA., Leidinger M, Schmitt B, Sauerwald T, Rieger M, Al�p�e C
Publication date: 2015
Article title: A novel low-cost pre-concentrator concept to boost sensitivity and selectivity of gas sensor systems.
Page numbers: 1-4
DOI: 10.1109/ICSENS.2015.7370361

Publisher: IEEE
Conference information: IEEE SENSORS, 2015

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
Template and target information: volatile organic compounds, VOCs
Author keywords: MOF, VOC detection, gas sensor microsystem, pre-concentrator, sensitivity

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