Imaging columns of the light elements carbon, nitrogen and oxygen with sub angstrom resolution

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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. ... continued below

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Kisielowski, C.; Hetherington, C.J.D.; Wang, Y.C.; Kilaas, R.; O'Keefe, M.A. & Thust, A. January 2, 2000.

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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.

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  • Journal Name: Ultramicroscopy; Journal Volume: 89; Journal Issue: 4; Other Information: Journal Publication Date: November 2001

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  • Report No.: LBNL--47162
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 791187
  • Archival Resource Key: ark:/67531/metadc734747

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  • January 2, 2000

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  • Oct. 19, 2015, 7:39 p.m.

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  • April 4, 2016, 1:11 p.m.

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Kisielowski, C.; Hetherington, C.J.D.; Wang, Y.C.; Kilaas, R.; O'Keefe, M.A. & Thust, A. Imaging columns of the light elements carbon, nitrogen and oxygen with sub angstrom resolution, article, January 2, 2000; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc734747/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.