Dresden 2020 – wissenschaftliches Programm
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CPP 28.5: Vortrag
Montag, 16. März 2020, 16:20–16:40, TOE 317
Soft X-ray Laminography adds a third dimension to STXM — Katharina Witte1, •Andreas Späth2, Simone Finizio1, Claire Donnelly1,3, Michal Odstrcil1, Manuel Guizar-Sicairos1, Mirko Holler1, Benjamin Watts1, Rainer H. Fink2, and Jörg Raabe1 — 1Paul Scherrer Institut, Villigen, Switzerland — 2FAU Erlangen-Nürnberg, Germany — 3Department of Physics, University of Cambridge, United Kingdom
Scanning Transmission X-ray microscopy is a powerful tool for spectromicroscopic analysis of nanostructured thin-film specimens. While developments focused on organic soft matter for many years, STXM has meanwhile also contributed to imaging of magnetic nanostructures based on (XMCD) contrast. However, 3D imaging is so far limited to a narrow selection of suitable specimens and constraint experimental conditions. This is especially true for the implementation of tomography, since the full sample rotation perpendicular to the optical axis is usually not possible for geometric reasons. Laminography overcomes this limitation by inclining the sample rotation axis by the laminography angle θ < 90° so that it is no longer perpendicular to the incident X-ray beam. The major advantage is that the sample (and its support) can be laterally extended without further modification and without risking collisions during rotation. A new setup combines laminography and STXM using soft X-rays. We will present first 3D reconstructions of nanostructured objects from material science, biology and functional magnetic materials. Funding: BMBF grant 05K19WE2 and EU Marie Skłodowska-Curie grant No. 701647.