First-generation hybrid MEMS gas chromatograph

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

212 Scopus Citations
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Author(s)

  • Chia-Jung Lu
  • William H. Steinecker
  • Wei-Cheng Tian
  • Michael C. Oborny
  • Jamie M. Nichols
  • Masoud Agah
  • Joseph A. Potkay
  • Helena K. L. Chan
  • Jeffrey Driscoll
  • Richard D. Sacks
  • Kensall D. Wise
  • Edward T. Zellers

Detail(s)

Original languageEnglish
Pages (from-to)1123-1131
Journal / PublicationLab on a Chip - Miniaturisation for Chemistry and Biology
Volume5
Issue number10
Publication statusPublished - Oct 2005
Externally publishedYes

Abstract

The fabrication, assembly, and initial testing of a hybrid microfabricated gas Chromatograph (μGC) is described. The μGC incorporates capabilities for on-board calibration, sample preconcentration and focused thermal desorption, temperature-programmed separations, and "spectral" detection with an integrated array of microsensors, and is designed for rapid determinations of complex mixtures of environmental contaminants at trace concentrations. Ambient air is used as the carrier gas to avoid the need for on-board gas supplies. The microsystem is plumbed through an etched-Si/glass microfluidic interconnection substrate with fused silica capillaries and employs a miniature commercial pump and valve subsystem for directing sample flow. The latest performance data on each system component are presented followed by first analytical results from the working microsystem. Tradeoffs in system performance as a function of volumetric flow rate are explored. The determination of an 11-vapor mixture of typical indoor air contaminants in less than 90 s is demonstrated with projected detection limits in the low part-per-billion concentration range for a preconcentrated air-sample volume of 0.25 L. © The Royal Society of Chemistry 2005.

Citation Format(s)

First-generation hybrid MEMS gas chromatograph. / Lu, Chia-Jung; Steinecker, William H.; Tian, Wei-Cheng et al.
In: Lab on a Chip - Miniaturisation for Chemistry and Biology, Vol. 5, No. 10, 10.2005, p. 1123-1131.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review