@ValerieGabelica@fmeierX I think the counter-flow design is an important improvement to keep the drift zone clean in atmospheric IMS so that it was retained in the picture. It was said Prof. Hill proposed this counter-flow design and then IMS became a real useful instrument.
Not sure about the story.
@AlexanderBohnh1@ISIMSSociety I have got it. Thanks for the reply! It is really an interesting method to enhance the field strength! Looking forward to the publication.
@GlennESpangler1@ISIMSSociety I think the ion shutter is different from the TP gate though the structure is similar. The previous work can be found in https://t.co/KOGxAQprEu