High Field Asymmetric Drift Tubes

3 HIGH FIELD ASYMMETRIC DRIFT TUBES 6.3.1 Generae Comments 

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FIGURE 6.5 Drift tubes for FAIMS or DMS including the configuration commercialized by Thermo Fisher Scientific (a) with a cylindrical shape (with permission from Thermo Fisher Scientific) the first small planar design commercialized by Sionex, Incorporated (b) (from Miller et al., A novel micro-machined high field asymmetric waveform ion mobility spectrometer, Sens. Actuators B 2000 with permission) and the microfabricated, very small structures of the ultraFAlMS (c) manufactured by Owlstone Nanotechnology (from Owlstone White Paper, 2006). 

Ion-mobility may be implemented in IMS-MS systems in the form of (a) drift tubes, as already discussed [138, 139, 144], (b) differential ion-mobility or high-field asymmetric waveform ion mobility spectrometiy (FAIMS) devices [145-147], and (c) traveling-wave ion guide devices [44,148]. Tandem IMS-IMS-MS systems... 

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