#ptychography — Public Fediverse posts

https://www.europesays.com/ie/211396/ New technique overcomes technological barrier in 3D brain imaging #Brain #Cell #Connectomics #Éire #Electron #ElectronMicroscopy #Health #IE #imaging #Ireland #Liver #Microscopy #Neurons #Ptychography #Research #XRay

Ptychography for High Resolution Microscopy https://hackaday.com/2025/03/05/ptychography-for-high-resolution-microscopy/ #digitalcamerashacks #ptychography #microscopy #LEDHacks

Ptychography for High Resolution Microscopy - Nowadays, if you have a microscope, you probably have a camera of some sort attach... - https://hackaday.com/2025/03/05/ptychography-for-high-resolution-microscopy/ #digitalcamerashacks #ptychography #microscopy #ledhacks

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

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

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

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

Closeup picture of atoms with electron ptychography https://www.science.org/doi/10.1126/science.abg2533
#science #imaging #atoms #ptychography

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

Ptychography Shows Atoms at Amazing Revolution - Cornell University enhanced electron microscopy using a technique known as ptychog... - https://hackaday.com/2021/05/25/ptychography-shows-atoms-at-amazing-revolution/ #electronmicroscope #electronmicroscopy #ptychography #science #atoms #news