TY  - JOUR
AU  - Roeper, Sina
AU  - Stachnik, Karolina
AU  - Voss, Jonas
AU  - Hussak, Sarah-Alexandra
AU  - Åstrand, Mattias
AU  - Grote, Lukas
AU  - Wittwer, Felix
AU  - Seyrich, Martin
AU  - Niese, Sven
AU  - Gawlitza, Peter
AU  - Vogt, Ulrich
AU  - Schroer, Christian
AU  - Koziej, Dorota
AU  - Schropp, Andreas
TI  - X-ray near-field multi-slice ptychography for in-situ imaging
JO  - Scientific reports
VL  - 15
IS  - 1
SN  - 2045-2322
CY  - [London]
PB  - Springer Nature
M1  - PUBDB-2025-01919
SP  - 32150
PY  - 2025
AB  - 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.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1038/s41598-025-15610-8
UR  - https://bib-pubdb1.desy.de/record/631050
ER  -