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Published on: June 27, 2022
Pulsed-beam transmission electron microscopy and radiation damage
David J Flannigan1, Elisah J VandenBussche1
1Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, MN 55455, USA; Minnesota Institute for Ultrafast Science, University of Minnesota, Minneapolis, MN 55455, USA.
Pulsed electron beams in transmission electron microscopes (TEMs) can significantly reduce specimen damage during materials characterization. This review highlights evidence supporting pulsed-beam TEM as a viable method for mitigating beam-induced damage.
Area of Science:
- Materials Science
- Microscopy
- Physics
Background:
- Transmission electron microscopes (TEMs) are crucial for materials characterization.
- Beam-induced damage is a significant challenge in TEM imaging.
- Existing methods for damage mitigation have limitations.
Purpose of the Study:
- To review the application of pulsed electron beams in TEMs.
- To assess the effectiveness of pulsed-beam TEM for mitigating specimen damage.
- To explore the practicality and underlying mechanisms of pulsed-beam TEM.
Main Methods:
- Review of established damage reduction techniques in TEM.
- Introduction to pulsed-beam TEM concepts and instrumentation.
- Analysis of recent research on pulsed-beam effects and damage mitigation.
Main Results:
- Pulsed electron beams offer a promising approach to reduce beam-induced damage in TEM.
- Recent studies provide compelling evidence for the viability of pulsed-beam TEM.
- The use of temporally structured electron beams is explored.
Conclusions:
- Pulsed-beam TEM is a viable strategy for mitigating specimen damage.
- Further research is needed to fully understand the mechanisms and optimize the approach.
- Future directions include addressing current gaps in understanding and practical implementation.
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