%0 Journal Article
%A Roeper, Sina
%A Stachnik, Karolina
%A Voss, Jonas
%A Hussak, Sarah-Alexandra
%A Åstrand, Mattias
%A Grote, Lukas
%A Wittwer, Felix
%A Seyrich, Martin
%A Niese, Sven
%A Gawlitza, Peter
%A Vogt, Ulrich
%A Schroer, Christian
%A Koziej, Dorota
%A Schropp, Andreas
%T X-ray near-field multi-slice ptychography for in-situ imaging
%J Scientific reports
%V 15
%N 1
%@ 2045-2322
%C [London]
%I Springer Nature
%M PUBDB-2025-01919
%P 32150
%D 2025
%X In-situ imaging of chemical reactions can provide valuable insight into nanoparticle growth and structural evolution. Hard X-ray imaging is an excellent tool for this purpose, as it combines high spatial resolution with high penetration depth, allowing for realistic reaction environments. While far-field ptychography is a well-established method at synchrotron radiation sources, its near-field analog has received less attention. In this work we show that near-field multi-slice ptychography is a competitive method for high-resolution in-situ imaging by studying the formation of gold nanocages via galvanic replacement. Our work extends near-field X-ray ptychography to sub-50 nm spatial resolution by using multilayer Laue lenses. These high numerical aperture optics enable to distinguish sample layers that are separated by less than 100 µm by multi-slicing techniques.
%F PUB:(DE-HGF)16
%9 Journal Article
%R 10.1038/s41598-025-15610-8
%U https://bib-pubdb1.desy.de/record/631050