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To enable square and rectangular beams in a cryo-TEM, we fabricated our own aperture plates for our ThermoFisher Arctica G2 and ThermoFisher Krios G4 microscopes using reactive ion etching of ...
One solution to the problem of imperfect tiling with round beams is to use a square electron beam. Modern cryo-TEMs use Mueller-type sources in which the emitter’s shape defines the electron beam ...
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