Abstract

Abstract Few electron optical inventions have revolutionized the TEM/ STEM as profoundly as the spherical aberration (Cs) corrector has. Characterization of technologically important materials increasingly needs to be done at the atomic or even sub-atomic level. This characterization includes determination of atomic structure as well as structural chemistry. With Cs correctors, the sub-Angstrom imaging barrier has been passed, and fast atomic scale spectroscopy is possible. In addition to improvements in resolution, Cs correctors offer a number of other significant improvements and benefits.

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