Sub-Angstrom Atomic-Resolution Imaging of Heavy Atoms to Light Atoms

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Three decades ago John Cowley and his group at ASU achieved high-resolution electron microscope images showing the crystal unit cell contents at better than 4Angstrom resolution. Over the years, this achievement has inspired improvements in resolution that have enabled researchers to pinpoint the positions of heavy atom columns within the cell. More recently, this ability has been extended to light atoms as resolution has improved. Sub-Angstrom resolution has enabled researchers to image the columns of light atoms (carbon, oxygen and nitrogen) that are present in many complex structures. By using sub-Angstrom focal-series reconstruction of the specimen exit surface wave to ... continued below

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O'Keefe, Michael A. & Shao-Horn, Yang May 23, 2003.

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Three decades ago John Cowley and his group at ASU achieved high-resolution electron microscope images showing the crystal unit cell contents at better than 4Angstrom resolution. Over the years, this achievement has inspired improvements in resolution that have enabled researchers to pinpoint the positions of heavy atom columns within the cell. More recently, this ability has been extended to light atoms as resolution has improved. Sub-Angstrom resolution has enabled researchers to image the columns of light atoms (carbon, oxygen and nitrogen) that are present in many complex structures. By using sub-Angstrom focal-series reconstruction of the specimen exit surface wave to image columns of cobalt, oxygen, and lithium atoms in a transition metal oxide structure commonly used as positive electrodes in lithium rechargeable batteries, we show that the range of detectable light atoms extends to lithium. HRTEM at sub-Angstrom resolution will provide the essential role of experimental verification for the emergent nanotech revolution. Our results foreshadow those to be expected from next-generation TEMs with Cs-corrected lenses and monochromated electron beams.

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  • Journal Name: Microscopy and Microanalysis; Journal Volume: 10; Journal Issue: 1; Other Information: Journal Publication Date: 02/2004

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  • Report No.: LBNL--52090
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 822959
  • Archival Resource Key: ark:/67531/metadc782689

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • May 23, 2003

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  • Dec. 3, 2015, 9:30 a.m.

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  • Sept. 21, 2017, 6:01 p.m.

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O'Keefe, Michael A. & Shao-Horn, Yang. Sub-Angstrom Atomic-Resolution Imaging of Heavy Atoms to Light Atoms, article, May 23, 2003; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc782689/: accessed January 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.