Single-Pixel Imaging in Space and Time with Optically Modulated Free Electrons
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Date
2023-04-19
Authors
Konečná, Andrea
Rottuno, Enzo
Grillo, Vincenzo
de Abajo, F. Javier García
Vanacore, Giovanni Maria
ORCID
0000-0002-7423-5481Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
American Chemical Society
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Abstract
Single-pixel imaging, originally developed in light well as probing with light wavelengths undetectable by conventional multi-pixel detectors. However, the spatial resolution of optics-based single-pixel microscopy is limited by diffraction to hundreds of nanometers. Here, we propose an implementation of single-pixel imaging relying on attainable modifications of currently available ultrafast electron microscopes in which optically modulated electrons are used instead of photons to achieve subnanometer spatially and temporally resolved single-pixel imaging. We simulate electron beam profiles generated by interaction with the optical field produced by an externally programmable spatial light modulator and demonstrate the feasibility of the method by showing that the sample image and its temporal evolution can be reconstructed using realistic imperfect illumination patterns. Electron single-pixel imaging holds strong potential for application in low-dose probing of beam-sensitive biological and molecular samples, including rapid screening during in situ experiments.
Description
Citation
ACS Photonics. 2023, vol. 10, issue 5, p. 1463-1472.
https://pubs.acs.org/doi/full/10.1021/acsphotonics.3c00047
https://pubs.acs.org/doi/full/10.1021/acsphotonics.3c00047
Document type
Peer-reviewed
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Published version
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Language of document
en