Patent ID: 6727496
Filing Date: 2004-04-27
Classification: G01N,H01J

Abstract:
System for identification of compounds in a mixture based on ion mobility, the system comprising:a pair of substrates, said substrates mated together facing each other over a gap, said substrates forming at least one radial flow path in said gap, a spacer, said gap being defined by said spacer, ion filter electrodes on said substrates facing each other over said gap and defining at least one ion filter, ions representing compounds in a mixture being filtered by said ion filter according to mobility characteristics as the ions travel radially along said flow path between said filter electrodes in said gap, ion species having said characteristics passing radially through said filter, and wherein said spacer and said substrate surfaces define a plurality of radial flow paths, and wherein said ions are introduced in said flow paths at one end thereof, respectively.