Device for performing field asymmetric waveform ion mobility spectrometry
US11227757B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2020 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Jul 29, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/622
- 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, wherein 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. The asymmetric time dependent electric field has substantially straight contours of equal field strength in a plane perpendicular to the analytical axis to focus ions having different differential mobilities towards different spatial domains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.