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
Closeup picture of atoms with electron ptychography https://www.science.org/doi/10.1126/science.abg2533
#science #imaging #atoms #ptychography
The Highest Resolution We've Ever Seen Atoms
https://personaljournal.ca/paulsutton/the-highest-resolution-weve-ever-seen-atoms
This Stunning Image Is The Highest Resolution We've Ever Seen Atoms
https://www.sciencealert.com/this-stunning-image-is-the-highest-resolution-weve-ever-seen-atoms #chemistry #photography #ptychography #atoms #PraseodymiumOrthoscandate #PrScO3
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
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?
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
