Isotope-Resolved Electron Energy Loss Spectroscopy in a Monochromated Scanning Transmission Electron Microscope
Abstract
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. In this paper, 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.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Univ. of Illinois, Chicago, IL (United States)
- Nion Co., Kirkland, WA (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1767869
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Microscopy Today
- Additional Journal Information:
- Journal Volume: 29; Journal Issue: 1; Journal ID: ISSN 1551-9295
- Publisher:
- Cambridge University Press
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; electron energy loss spectroscopy; scanning transmission electron microscopy; vibrational spectroscopy; monochromated aberration correction; liquid cells
Citation Formats
Hachtel, Jordan A., Jokisaari, Jacob R., Krivanek, Ondrej L., Idrobo Tapia, Juan Carlos, and Klie, Robert F. Isotope-Resolved Electron Energy Loss Spectroscopy in a Monochromated Scanning Transmission Electron Microscope. United States: N. p., 2021.
Web. doi:10.1017/s1551929520001789.
Hachtel, Jordan A., Jokisaari, Jacob R., Krivanek, Ondrej L., Idrobo Tapia, Juan Carlos, & Klie, Robert F. Isotope-Resolved Electron Energy Loss Spectroscopy in a Monochromated Scanning Transmission Electron Microscope. United States. https://doi.org/10.1017/s1551929520001789
Hachtel, Jordan A., Jokisaari, Jacob R., Krivanek, Ondrej L., Idrobo Tapia, Juan Carlos, and Klie, Robert F. Fri .
"Isotope-Resolved Electron Energy Loss Spectroscopy in a Monochromated Scanning Transmission Electron Microscope". United States. https://doi.org/10.1017/s1551929520001789. https://www.osti.gov/servlets/purl/1767869.
@article{osti_1767869,
title = {Isotope-Resolved Electron Energy Loss Spectroscopy in a Monochromated Scanning Transmission Electron Microscope},
author = {Hachtel, Jordan A. and Jokisaari, Jacob R. and Krivanek, Ondrej L. and Idrobo Tapia, Juan Carlos and Klie, Robert F.},
abstractNote = {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. In this paper, 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.},
doi = {10.1017/s1551929520001789},
journal = {Microscopy Today},
number = 1,
volume = 29,
place = {United States},
year = {Fri Jan 15 00:00:00 EST 2021},
month = {Fri Jan 15 00:00:00 EST 2021}
}
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