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A microfluidic gas analyzer for selective detection of biomarker gases

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3 Author(s)
Mohammad Paknahad ; Faculty of Elec. and Comp. Eng., K. N. Toosi University of Tech., Tehran 1431714191, Iran ; Vahid Ghafarinia ; Faramarz Hossein-Babaei

We report fabricating a microfluidic device that selectively detects biomarker gases. It consists of a microfluidic channel and a semiconductor gas sensor integrated on a PMMA chip. Biomarker gases are identified by monitoring their transient molecular diffusion-driven flow in a microfluidic channel using a semiconductor gas sensor. Analyte-dependent specific features of the sensor response patterns are extracted, which facilitate analyte classification in a 3-D feature space. The ability of the device to distinguish four different gas biomarkers, including acetone, hydrogen, ethanol and benzene, in a wide concentration range, is demonstrated. The miniaturized gas analyzer presented is versatile and cost effective.

Published in:

Sensors Applications Symposium (SAS), 2012 IEEE

Date of Conference:

7-9 Feb. 2012