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1 results

  • 4 - Has ASAT Been Achieved?

  • from Core Section
  • Thomas F. Kelly, Brian P. Gorman, Colorado School of Mines, Simon P. Ringer, University of Sydney
  • Book:
    Atomic-Scale Analytical Tomography
    Published online:
    03 March 2022
    Print publication:
    24 March 2022, pp 55-76

  • Summary

    Using our strict definition of Atomic Scale Analytical Tomography (ASAT), we explore the current landscape of materials characterization tools and discuss how electron microscopy, field ion microscopy, and atom probe tomography are each approaching ASAT. State-of-the-art electron microscopy can achieve sub-angstrom spatial resolution imaging in 2-D and small volumes in 3-D but lacks single-atom chemical sensitivity, especially in 3-D. Field Ion Microscopy can achieve 3-D imaging on small volumes but not for all materials. Atom probe tomography can achieve single-atom elemental quantification in 3-D but lacks the spatial resolution necessary for ASAT. The chapter concludes with a comparison of the different techniques and discusses how different techniques may be complementary.