Achal,
How big is the size of the openings within the grids? As I remember from
years ago the size may be variable depending on the slot types of EM grids.
I imagine that you're using apertures of less than 500 nm. Or do I
misunderstand you and you use the whole circular grid as the pinhole lens?
Thanks
I. Zarkov
(former EM tech)
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Received on Wed Jul 24 08:36:21 2002
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