Secondary electron topographical contrast formation in scanning transmission electron microscopy
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866914163102580736 |
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| author | Vlasov, Evgenii Heyvaert, Wouter Stoops, Tom Van Aert, Sandra Verbeeck, Johan Bals, Sara |
| author_facet | Vlasov, Evgenii Heyvaert, Wouter Stoops, Tom Van Aert, Sandra Verbeeck, Johan Bals, Sara |
| contents | Secondary electron (SE) imaging offers a powerful complementary capabilities to conventional scanning transmission electron microscopy (STEM) by providing surface-sensitive, pseudo-3D topographic information. However, contrast interpretation of such images remains empirical due to complex interactions of emitted SE with the magnetic field in the objective field of TEM. Here, we propose an analytical physical model that takes into account the physics of SE emission and interaction of the emitted SEs with magnetic field. This enables more reliable image interpretation and potentially lay the foundation for novel 3D surface reconstruction algorithms. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_14491 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Secondary electron topographical contrast formation in scanning transmission electron microscopy Vlasov, Evgenii Heyvaert, Wouter Stoops, Tom Van Aert, Sandra Verbeeck, Johan Bals, Sara Applied Physics Secondary electron (SE) imaging offers a powerful complementary capabilities to conventional scanning transmission electron microscopy (STEM) by providing surface-sensitive, pseudo-3D topographic information. However, contrast interpretation of such images remains empirical due to complex interactions of emitted SE with the magnetic field in the objective field of TEM. Here, we propose an analytical physical model that takes into account the physics of SE emission and interaction of the emitted SEs with magnetic field. This enables more reliable image interpretation and potentially lay the foundation for novel 3D surface reconstruction algorithms. |
| title | Secondary electron topographical contrast formation in scanning transmission electron microscopy |
| topic | Applied Physics |
| url | https://arxiv.org/abs/2511.14491 |