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…
An evaluation framework for sparse 4D (3D + time) imaging reconstruction via bootstrapped cross-validation
Yuhe Zhang, Zisheng Yao, Zhe Hu +2
Four-dimensional (4D; 3D + time) microscopic imaging has emerged as a powerful technique for investigating dynamic phenomena in complex systems, enabling direct visualization of st…
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…
Time-resolved X-ray radiography of through-thickness liquid transport in partly saturated needle-punched nonwovens
Patrick Wegele, Zisheng Yao, Jonas Tejbo +7
Nonwoven fibre networks underpin filtration, insulation and geotextiles, where liquid uptake, redistribution and release govern performance. In needle-punched felts, barbed needles…