US 12,228,546 B2
Mobility based filtering of ions
John Daniel DeBord, West Grove, PA (US); Liulin Deng, Chester Springs, PA (US); and Nathan Paul Roehr, Wilmington, DE (US)
Assigned to MOBILion Systems, Inc., Chadds Ford, PA (US)
Filed by MOBILion Systems, Inc., Chadds Ford, PA (US)
Filed on Dec. 5, 2022, as Appl. No. 18/074,630.
Application 18/074,630 is a division of application No. 17/101,453, filed on Nov. 23, 2020, granted, now 11,543,384.
Claims priority of provisional application 62/939,330, filed on Nov. 22, 2019.
Prior Publication US 2023/0103674 A1, Apr. 6, 2023
Int. Cl. G01N 27/622 (2021.01)
CPC G01N 27/622 (2013.01) 13 Claims
OG exemplary drawing
 
1. A system comprising:
a first ion channel extending between a first end and a second end, and configured to receive an ion packet from an ion source at a location along the first ion channel between the first end and the second end;
a controller configured to apply a first voltage signal and a second voltage signal to a first plurality of electrodes adjacent to the first ion channel,
wherein the first plurality of electrodes are configured to generate, based on receipt of the first voltage signal, a first traveling drive potential that travels at a first speed along a first direction, the first direction extending from the first end to the second end, and
wherein the first plurality of electrodes are configured to generate, based on receipt of the second voltage signal, a second traveling drive potential that travels at a second speed along a second direction, the second direction extending from the second end to the first end,
wherein a first ion sub-packet of the ion packet having ions with mobilities above a first threshold mobility value is directed along the first direction to the second end, and a second ion sub-packet of the ion packet having ions with mobilities below the first threshold mobility value is directed along the second direction to the first end.