Imaging columns of the light elements carbon, nitrogen and oxygen with sub angstrom resolution
It is reported that lattice imaging with a 300 kV field emission microscope in combination with numerical reconstruction procedures can be used to reach an interpretable resolution of about 80 pm for the first time. A retrieval of the electron exit wave from focal series allows for the resolution of single atomic columns of the light elements carbon, nitrogen, and oxygen at a projected nearest neighbor spacing down to 85 pm. Lens aberrations are corrected on-line during the experiment and by hardware such that resulting image distortions are below 80 pm. Consequently, the imaging can be aberration-free to this extent. The resolution enhancement results from increased electrical and mechanical stability's of the instrument coupled with a low spherical aberration coefficient of 0.595 + 0.005 mm.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director, Office of Science (US)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 791187
- Report Number(s):
- LBNL-47162; ULTRD6; R&D Project: 503601; TRN: US0200600
- Journal Information:
- Ultramicroscopy, Vol. 89, Issue 4; Other Information: Journal Publication Date: November 2001; PBD: 2 Jan 2000; ISSN 0304-3991
- Country of Publication:
- United States
- Language:
- English
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