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Proceedings Paper

Chemical concentrator for rapid vapor detection
Author(s): Michael W. Geis; Roderick R. Kunz
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Paper Abstract

This paper presents an innovative microfluidic gas concentrator that uses thermophoresis to concentrate a preselected dilute constituent in air. When used in combination with a gas phase detector, such as an ion mobility spectrometer, the ability of the thermophoretic device to increase the concentration of the target constituent as well as to eliminate other interfering impurities, will substantially increase the sensitivity of the resultant system over the detector alone. The compete sensor could be hand held with an estimated sensitivity of 10-12 to 10-15 atmospheres with detection times of 0.1 to 10 s respectively.

Paper Details

Date Published: 2 August 1999
PDF: 12 pages
Proc. SPIE 3710, Detection and Remediation Technologies for Mines and Minelike Targets IV, (2 August 1999); doi: 10.1117/12.357066
Show Author Affiliations
Michael W. Geis, MIT Lincoln Lab. (United States)
Roderick R. Kunz, MIT Lincoln Lab. (United States)

Published in SPIE Proceedings Vol. 3710:
Detection and Remediation Technologies for Mines and Minelike Targets IV
Abinash C. Dubey; James F. Harvey; J. Thomas Broach; Regina E. Dugan, Editor(s)

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