#ptychography

2025-01-21

Now @ #DESY #UM25:

15th Workshop on X-Ray Nano-Imaging of Biological and Chemical Systems at PETRA III

“The workshop gives attention to x-ray #microscopy at various PETRA III beamlines with special emphasis on
applications in #biology and #chemistry. Several scientific (multimodal) #XRay #imaging highlights are presented
with focus on the scanning X-ray microscopy beamlines P06, P10 and P05.”

– Diamond-CRLs
– Multibeam #Ptychography
#Nanoparticle distribution
#Nanoscopy: #semiconductors

Max Vapormtxvp
2024-09-14
2023-11-27

First day of “Deep learning, image analysis, inverse problems, and optimization (DIPOpt)” was very fruitful. Three talks by Martin Storath, Odyssée Merveille, and Xiaohao Cai. In addition, I had the chance to present a poster on Electron Ptychography.
#ptychography #microscopy #electronmicroscop #phaseretrieval #InverseProblem

2023-06-16

Oleh Melnyk, Helmholtz Munich: Understanding gradient methods for blind #ptychography
[#xray #imaging #phaseretrieval]

Scanning technique with overlapping illuminations, to invert far-field intensities into near-field amplitude and phase, and recover both object and illumination

But … why does it work?

2023-01-26

Combining in-line #holography with coherent diffractive imaging #CDI
- “phase retrieval for adults”
- refractive object (Wittwer et al, Optica 2022)
-ptychographic iterative engine [#ptychography #PIE] instead of empty beam division
- range constraints, homogeneity

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