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Differential mobility detector

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Varian CP-4900 MicroGC, four channel, with differential mobility detector (first from the right)

A differential mobility detector (DMD) is a type of microelectromechanical system, radio frequency modulated ion mobility spectrometry (MEMS RF-IMS) device.[1] Though its small in size, it easily fits into portable units, such as transferable gas chromatographs or drug/explosives sensors. For instance, it was incorporated by Varian in its CP-4900 DMD MicroGC, and by Thermo Fisher in its EGIS Defender system, designed to detect narcotics and explosives in transportation or other homeland security applications.

References

  1. ^ G.A. Eiceman; Z. Karpas (23 June 2005). Ion Mobility Spectrometry, Second Edition. CRC Press. pp. 214–. ISBN 978-1-4200-3897-2.
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