Lenses used in electron microscopy have aberrations that limit their resolution. Successful correction of spherical aberration is now possible, opening the door to three-dimensional, sub-ångström imaging of atomic arrangements.
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Cockayne, D. Better vision with electron lenses. Nature Mater 1, 7–8 (2002). https://doi.org/10.1038/nmat717
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DOI: https://doi.org/10.1038/nmat717
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