7 papers
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…
4D Synchrotron X-Ray Multi Projection Imaging (XMPI) for studying multiphase flow dynamics and flow instabilities in porous networks
Patrick Wegele, Zisheng Yao, Jonas Tejbo +11
Flow instabilities such as Haines jumps in porous media are common phenomena that occur on sub-second timescales. X-rays are particularly suitable for investigating these processes…
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…
Time-resolved 3D imaging opportunities with XMPI at ForMAX
Julia Katharina Rogalinski, Zisheng Yao, Yuhe Zhang +11
X-rays are commonly used in imaging experiments due to their penetration power, which enables non-destructive resolution of internal structures in samples that are opaque to visibl…
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…
Physics-informed 4D X-ray image reconstruction from ultra-sparse spatiotemporal data
Zisheng Yao, Yuhe Zhang, Zhe Hu +3
The unprecedented X-ray flux density provided by modern X-ray sources offers new spatiotemporal possibilities for X-ray imaging of fast dynamic processes. Approaches to exploit suc…