Patent ID: 7274014
Filing Date: 2007-09-25
Classification: G01N

Abstract:
1. An apparatus for controllably varying specificity of a FAIMS-based ion separation, comprising: a first electrode comprising a first electrode surface; a second electrode comprising a second electrode surface, the second electrode spaced-apart from the first electrode along a first direction such that the second electrode surface faces the first electrode surface and overlaps therewith along a second direction that is normal to the first direction so as to define a FAIMS analyzer region therebetween, the FAIMS analyzer region having an ion inlet end and an ion outlet end, the first electrode and the second electrode movable one relative to the other along the second direction for varying a length of the FAIMS analyzer region between the ion inlet end and the ion outlet end; and, an actuator for controllably relatively moving the first electrode along the second direction relative to the second electrode, for varying the length of the FAIMS analyzer region between the ion inlet end and the ion outlet end.