Dresden 2017 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 39: X-Ray Imaging, Holography, Ptychography and Tomography

MA 39.1: Hauptvortrag

Mittwoch, 22. März 2017, 09:30–10:00, MER 02

X-ray Microscopy: Imaging the Chemistry Inside — •Christian G. Schroer — Photon Science, DESY, Notkestr. 85, 22607 Hamburg — Institut für Nanostruktur- und Festkörperphysik, Universität Hamburg, Jungiusstr. 11, 20355 Hamburg

One key strength of hard X-ray microscopy is that it can image the inner structures of an object without destructive sample preparation. Exploiting various X-ray analytical contrasts, such as fluorescence, diffraction, and absorption, the elemental, structural, and chemical information can be obtained from inside a sample, e. g., a chemical reactor. Conventional X-ray microscopy is currently limited by X-ray optics to a few tens of nanometers. One way to overcome this limitation is scanning coherent X-ray diffraction microscopy also known as ptychography [1]. It can be combined with spectroscopy to obtain chemical information on a given element of interest [2]. In combination with tomography, the three-dimensional structure of an object can be reconstructed with unprecedented spatial resolution [3]. Here, an overview is given over multimodal X-ray imaging for materials research at modern synchrotron radiation sources.

[1] J. Rodenburg, H. Faulkner, Appl. Phys. Lett. 85, 4795 (2004); P. Thibault, et al., Science 321, 379 (2008); A. Schropp, et al., Appl. Phys. Lett. 96, 091102 (2010); A. Schropp, et al., Appl. Phys. Lett. 100, 253112 (2012); J. Reinhardt, et al., Ultramicroscopy 173, 52 (2017).

[2] R. Hoppe, et al., Appl. Phys. Lett. 102, 203104 (2013).

[3] M. Dierolf, et al., Nature 467, 436 (2010); M. Holler, et al., Scientific Reports 4, 3857 (2014).