Device for performing field asymmetric waveform ion mobility spectrometry
US11428666B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2020 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Jul 31, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/36
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for performing field asymmetric waveform ion mobility spectrometry, “FAIMS” including first and second segmented planar electrodes, each electrode including three or more segments and extending in a direction parallel to an analytical axis of the device, the first and second segmented electrodes are separated from each other to provide an analytical gap therebetween; and propelling means for propelling ions through the analytical gap in a direction parallel to the analytical axis. The device is configured to operate in: a FAIMS mode in which a power supply applies voltage waveforms to the segments to produce an asymmetric time dependent electric field in the analytical gap for FAIMS analysis of ions propelled through the analytical gap; and a transparent mode in which the power supply applies voltage waveforms to the to produce a confining electric field in the analytical gap for focussing ions towards the longitudinal axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.