5 papers · 1 filter
Resolution-matched gain in Multi-beam ptychography
Runqing Yang, Maik Kahnt, Pablo Villanueva-Perez
Single-beam ptychography (SBP) requires overlapping scan positions for reliable reconstruction, and imaging larger areas demands more measurements. Multi-beam ptychography (MBP) il…
4D reconstruction of alumina laser melt pools at 25 kHz via operando X-ray multi-projection imaging
Lars Witte, Eliot Jermann, Zhe Hu +9
Advancing additive manufacturing, e.g., laser powder-bed fusion (LPBF), requires resolving rapid processes such as melt-pool dynamics and keyhole evolution in 4D (3D + time). Opera…
Constraint-Free Coherent Diffraction Imaging via Physics-Guided Neural Fields
Zhe Hu, Zisheng Yao, Yuhe Zhang +1
CDI is a lensless imaging technique that enables atomic-resolution imaging of non-crystalline specimens and their dynamics. However, its broader implementation has been hindered by…
Optimizing probes for multi-beam ptychography
Runqing Yang, Pablo Villanueva-Perez, Maik Kahnt
Multi-beam ptychography (MBP) offers a scalable solution to improve the throughput of state-of-the-art ptychography by increasing the number of coherent beams that illuminate the s…
Super time-resolved tomography
Zhe Hu, Kalle Josefsson, Zisheng Yao +4
Understanding 3D fundamental processes is crucial for academic and industrial applications. Nowadays, X-ray time-resolved tomography, or tomoscopy, is a leading technique for in-si…