Patent ID: 9177769
Filing Date: 2015-11-03
Classification: G01N,H01J

Abstract:
1. A method of manufacturing an ion filter, the method comprising providing a monolithic structure; selectively removing regions of the structure to define separated first and second filter opposing portions and to form a pair of interdigitated electrodes defining at least one ion channel therebetween wherein a first electrode is mechanically connected to and extends from said first filter portion and said interdigitated second electrode is mechanically connected to and extends from said second filter portion such that the first and second interdigitated electrodes extend toward one another from respective opposing said first and second filter portions; wherein a connecting portion connects the first and second filter portions of the structure which connection portion provides a higher electrical impedance between the first and second interdigitated electrodes than the filter would provide without such a connection, to thereby electrically separate the electrodes.