13Dec 5
Building a Microscope without Lenses https://hackaday.com/2025/12/04/building-a-microscope-without-lenses/
#Science #Cameralens #Diffraction #Microscope #Opticalmicroscope #Ptychography
Building A Microscope Without Lenses

It’s relatively easy to understand how optical microscopes work at low magnifications: one lens magnifies an image, the next magnifies the already-magnified image, and so on until it reaches the ey…

Hackaday
Markus OsterhoffJan 21, 2025

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 VaporSep 14, 2024
Closeup picture of atoms with electron ptychography https://www.science.org/doi/10.1126/science.abg2533
#science #imaging #atoms #ptychography
Paul SuttonSep 4, 2024

The Highest Resolution We've Ever Seen Atoms

https://personaljournal.ca/paulsutton/the-highest-resolution-weve-ever-seen-atoms

The Highest Resolution We've Ever Seen Atoms

This is pretty cool, we now have an even higher resolution image of what atoms look like. This article from Science Alert. Link to this article was posted to the Fediverse, so ...

Paul Sutton
Matt WillemsenSep 1, 2024
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
This Stunning Image Is The Highest Resolution We've Ever Seen Atoms

All the normal matter in the Universe is made up of teeny tiny building blocks that are far too small to be seen with the naked eye.

ScienceAlert
amirafsharmNov 27, 2023
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
Show threadMarkus OsterhoffJun 16, 2023

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?

Show threadMarkus OsterhoffJan 26, 2023
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