3D surface profilometry using neutral helium atoms
| Autor: | Radic, Aleksandar, Lambrick, Sam M., von Jeinsen, Nick A., Jardine, Andrew P., Ward, David J. |
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| Rok vydání: | 2023 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1063/5.0206374 |
| Popis: | Three-dimensional mapping of surface structures is important in a wide range of biological, technological, healthcare and research applications, including taxonomy, microfluidics and fabrication. Neutral helium atom beams have been established as a sensitive probe of topography and have already enabled structural information to be obtained from delicate samples, where conventional probes would cause damage. Here, we demonstrate empirical reconstruction of a complete surface profile using measurements from a scanning helium microscope (SHeM), using the heliometric stereo method and a single detector instrument geometry. Results for the surface profile of tetrahedral aluminum potassium sulphate crystals demonstrate the areas of surfaces and facet orientations can be recovered to within 5% of the expected values. Comment: 7 pages (including bibliography), 5 figures (including Appendix). Published at Applied Physics Letters on 14th May 2024 (doi.org/10.1063/5.0206374) |
| Databáze: | arXiv |
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