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43 results

Page 1 of 3

  • Isotope-Resolved Electron Energy Loss Spectroscopy in a Monochromated Scanning Transmission Electron Microscope

  • Jordan A. Hachtel, Jacob R. Jokisaari, Ondrej L. Krivanek, Juan Carlos Idrobo, Robert F. Klie
  • Journal:
    / Volume 29 / Issue 1 / January 2021
    Published online by Cambridge University Press:
    15 January 2021, pp. 36-41
    Print publication:
    January 2021
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  • The development and implementation of high-stability monochromators in state-of-the-art aberration-corrected scanning transmission electron microscopes has enabled materials characterization with an energy resolution as good as 3 meV. This allows the vibrational modes, which would otherwise be obscured by the energy spread of the electron beam, to be probed with very high precision in molecular materials. Since the vibrational energies depend on the weight of the atomic nuclei, vibrational spectroscopy can distinguish isotopes whose only difference lies in their neutron content. This opens up isotopic analysis and mapping in transmission electron microscopy as two important new research areas. Here, we review the monochromated electron energy loss spectroscopy (EELS) instrumentation, discuss optimal methods for probing beam-sensitive materials without destroying them, and review key nanoscale isotope-resolved results.

  • Image and Spectrum Image Denoising under the local low Rank Assumption

  • Jakob Spiegelberg, Juan Carlos Idrobo, Jan Rusz
  • Journal:
    / Volume 24 / Issue S1 / August 2018
    Published online by Cambridge University Press:
    01 August 2018, pp. 578-579
    Print publication:
    August 2018
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  • Atomic-resolution electric field measurements with a universal detector

  • Jordan A. Hachtel, Arashdeep Thind, Rohan Mishra, Juan Carlos Idrobo, Miaofang Chi
  • Journal:
    / Volume 24 / Issue S1 / August 2018
    Published online by Cambridge University Press:
    01 August 2018, pp. 114-115
    Print publication:
    August 2018
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Page 1 of 3