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US 7,030,372 B2Granted
Micromachined field asymmetric ion mobility filter and detection system
AssigneeSionex Corporation
InventorsRaanan A. Miller, Erkinjon G. Nazarov
Life of this patent
Estimating the term…
Abstract
A micromechanical field asymmetric ion mobility filter for a detection system includes a pair of spaced substrates defining between them a flow path between a sample inlet and an outlet; an ion filter disposed in the path and including a pair of spaced filter electrodes, one electrode associated with each substrate; and an electrical controller for applying a bias voltage and an asymmetric periodic voltage across the ion filter electrodes for controlling the paths of ions through the filter.
Claims91
A system for analyzing a sample comprising,
- an asymmetric electric field for dispersing ions of the sample,
- an ion filter having filter electrodes separated by an analytical gap and defining a flow path, within which the asymmetric field is formed, and
- a controller for automatically adjusting at least one condition of the asymmetric field and at least one condition of the flow path to separate particular ones of the dispersed ions from others of the dispersed ions for analyzing a component in the sample.
A method for analyzing a sample, comprising:
- dispersing ions of the sample using an asymmetric electric field in a flow path, and automatically adjusting at least one condition of the asymmetric electric field and at least one condition of the flow path to separate particular ones of the dispersed ions from others of the dispersed ions.
Dependencies are inferred from the claim text.