Micromachined field asymmetric ion mobility filter and...

Details Micromachined field asymmetric ion mobility filter and... Micromachined field asymmetric ion mobility filter and...

H - Electricity

01

J

H01J 49/00 (2006.01) G01N 27/62 (2006.01)

Patent

CA 2379502

A micromechanical field asymmetric ion mobility filter (24) for a detection system includes a pair of spaced substrates defining between them a flow path between a sample inlet (16) and an outlet; an ion filter disposed in the path and including a pair of spaced filter electrodes (20, 22), one electrode associated with each substrate; and an electrical controller (30) for applying a bias voltage and an asymmetric periodic voltage across the ion filter electrodes for controlling the paths of ions through the filter.

L'invention porte sur un filtre (24) microusiné à mobilité ionique et à champ asymétrique pour système de détection comportant: une paire de substrats séparés entourant un chemin lent reliant l'entrée (16) de l'échantillon à sa sortie; un filtre à ions placé sur le chemin et comportant une paire d'électrodes (20, 22) de filtrage séparées respectivement associées aux substrats; et une commande (30) électrique appliquant une tension de polarisation et une tension périodique asymétrique entre les électrodes pour influer sur la trajectoire des ions traversant le filtre.

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