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Analytical Electron Microscopy

  • Gianluigi BottonEmail author
  • Sagar Prabhudev
Chapter
  • 5.6k Downloads
Part of the Springer Handbooks book series (SHB)

Abstract

Analytical electron microscopy () refers to a collection of spectroscopic techniques that are capable of providing structural, compositional, and bonding information about samples probed by an electron beam, typically inside a transmission electron microscope (). Several AEM techniques are covered with particular attention given to the (energy-dispersive x-ray spectroscopy) microanalysis and (electron energy-loss spectroscopy) techniques. First, the different AEM techniques available in TEMs are surveyed and a parallel between EELS and EDXS is drawn. A fundamental description of the elastic and inelastic scattering events responsible for these signals is presented. The practical challenges related to electron optics and instrumentation capabilities are then discussed. Technical advances that have affected the performance of these AEM techniques are outlined, including successive generations and technologies of energy filters, monochromators, aberration correctors, and advanced energy-dispersive x-ray spectrometers. The different approaches of spectroscopic imaging with x-rays and energy-loss spectroscopy, the resolution limits, and the effects of electron-beam propagation are also described along with the types of information that can be extracted with electron-energy-loss near-edge structures. After a review of dielectric theory and low-loss spectroscopy, examples of plasmonic imaging are presented. The review also draws attention to the many efforts to extend the limits of spatial resolution and the atomic-level chemical analyses of materials. Some important progress in the statistical analysis of signals and associated numerical methods is mentioned. The review also presents some novel developments in image capture, such as the pixelated detectors. Finally, the realm of phonon spectroscopy made possible through the latest instrumentation is also discussed.

Notes

Acknowledgements

Gianluigi Botton is grateful for the patience and understanding of Peter Hawkes and John Spence who enabled him to do this work, particularly the first edition of this chapter despite on-going academic commitments, conference organization, and setting up of a new facility. GB is indebted to past members of his group for providing some figures and for feedback, in particular to N. Braidy, G. Radtke, M. Couillard, C. Maunders, Y. Zhu, G. Zhu, M. Bugnet, and S. Lazar. GB wants to thank several collaborators and friends who have provided, over the years, interesting samples, motivating discussions, and moralsupport.

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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Dept. of Materials Science & EngineeringMcMaster UniversityHamiltonCanada

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