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research article

Atomic-Resolution Imaging of Fast Nanoscale Dynamics with Bright Microsecond Electron Pulses

Olshin, Pavel K.  
•
Bongiovanni, Gabriele  
•
Drabbels, Marcel  
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December 3, 2020
Nano Letters

Atomic-resolution electron microscopy is a crucial tool to elucidate the structure of matter. Recently, fast electron cameras have added the time domain to high-resolution imaging, allowing static images to be acquired as movies from which sample drift can later be removed computationally and enabling real-time observations of atomic-scale dynamics on the millisecond time scale. Even higher time resolution can be achieved with short electron pulses, yet their potential for atomicresolution imaging remains unexplored. Here, we generate high-brightness microsecond electron pulses from a Schottky emitter whose current we briefly drive to near its limit. We demonstrate that drift-corrected imaging with such pulses can achieve atomic resolution in the presence of much larger amounts of drift than with a continuous electron beam. Moreover, such pulses enable atomic-resolution observations on the microsecond time scale, which we employ to elucidate the crystallization pathways of individual metal nanoparticles as well as the high-temperature transformation of perovskite nanocrystals.

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Type
research article
DOI
10.1021/acs.nanolett.0c04184
Author(s)
Olshin, Pavel K.  
Bongiovanni, Gabriele  
Drabbels, Marcel  
Lorenz, Ulrich  
Date Issued

2020-12-03

Publisher

American Chemical Society (ACS)

Published in
Nano Letters
Volume

21

Issue

1

Start page

612

End page

618

Subjects

Time-resolved transmission electron microscopy

•

drift correction

•

single shot imaging, high-resolution TEM

•

perovskite nanoparticles

•

Specimen drift presents

Note

More by Marcel Drabbels

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REVIEWED

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EPFL

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December 21, 2020
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/174179
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