Abstract
Newly developed achromatic electron optics allows the use of wide energy windows and makes feasible energy-filtered transmission electron microscopy (EFTEM) at atomic resolution. In this Letter we present EFTEM images formed using electrons that have undergone a silicon core-shell energy loss, exhibiting a resolution in EFTEM of 1.35 Å. This permits elemental mapping beyond the nanoscale provided that quantum mechanical calculations from first principles are done in tandem with the experiment to understand the physical information encoded in the images.
- Received 18 January 2013
DOI:https://doi.org/10.1103/PhysRevLett.110.185507
© 2013 American Physical Society
Synopsis
Atoms Snap into Focus
Published 2 May 2013
Researchers unveil the first chemically sensitive transmission electron microscope with single-atom resolution.
See more in Physics