Quadrupole FAIMS apparatus

Details Quadrupole FAIMS apparatus Quadrupole FAIMS apparatus

2006-11-30

2009-06-23

Berman, Jack I (Department: 2881)

Radiant energy

Ionic separation or analysis

C250S290000, C250S292000, C250S293000, C250S294000

Reexamination Certificate

active

07550717

ABSTRACT:
A combined rf-only/FAIMS analyzer is disclosed for use in mass spectrometry and other applications. The disclosed apparatus includes a plurality of flat-plate electrodes arranged around a longitudinal axis of the apparatus so as to define generally a parallelogram in a cross section taken in a plane that is normal to the longitudinal axis. FAIMS is removed electronically when not desired by application of radio frequency (rf) waveforms to the flat-plate electrodes.

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