Studying atomic structures by aberration-corrected transmission electron microscopy - PubMed (original) (raw)

. 2008 Jul 25;321(5888):506-10.

doi: 10.1126/science.1152800.

Affiliations

• PMID: 18653874
• DOI: 10.1126/science.1152800

Studying atomic structures by aberration-corrected transmission electron microscopy

Knut W Urban. Science. 2008.

Abstract

Seventy-five years after its invention, transmission electron microscopy has taken a great step forward with the introduction of aberration-corrected electron optics. An entirely new generation of instruments enables studies in condensed-matter physics and materials science to be performed at atomic-scale resolution. These new possibilities are meeting the growing demand of nanosciences and nanotechnology for the atomic-scale characterization of materials, nanosynthesized products and devices, and the validation of expected functions. Equipped with electron-energy filters and electron-energy-loss spectrometers, the new instruments allow studies not only of structure but also of elemental composition and chemical bonding. The energy resolution is about 100 milli-electron volts, and the accuracy of spatial measurements has reached a few picometers. However, understanding the results is generally not straightforward and only possible with extensive quantum-mechanical computer calculations.

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