Roberto Cerbino

Thank you Conrad! Your opinion and feedback is very much appreciated!

The Hitchhiker’s guide to differential dynamic microscopy Over nearly two decades, differential dynamic microscopy (DDM) has become a standard technique for extracting dynamic correlation functions from time-lapse micr

We hope this guide will make DDM as common as DLS in soft-matter and biological labs.

Give it a try, share your results, and let’s make DDM part of every microscope’s toolkit!

Link to the paper:
pubs.aip.org/aip/jcp/arti...

fastDDM comes with tutorial on using DDM to study:

- Colloidal suspensions
- Bacteria and active swimmers
- Microrheology of complex fluids
- Cells and tissues

The tutorial includes examples and notebooks for all of these.

We also introduce fastDDM — a new, open-source, high-performance implementation that makes DDM thousands of times faster and easy to use on large datasets.

🧰 Free, transparent, and ready for your next project.

We walk you through the complete pipeline ⬇️

🎥 Video acquisition → ⚡ Fourier analysis → 📊 Fitting → 🔍 Physical parameters

The same logic works for bright-field, phase-contrast, fluorescence microscopy, and beyond…

DDM lets you turn any microscopy video into a scattering experiment, revealing the dynamics of colloids, proteins, liquid crystals, foams, emulsions, cells, bacteria, or active matter directly from image sequences.

It’s like DLS, but with a microscope and a movie.

Are you interested in using Differential Dynamic Microscopy (DDM), but found it too difficult to just give it a try?

Fear no more. Our new tutorial is now published in J Chem Phys (link below) and it comes with open-source code and Python notebooks to make your life easy!

The ÖPG-SPS conference kicked off yesterday at the University of Vienna with a variety of public events. From Tuesday to Friday, renowned speakers will present the latest advancements in a range of research fields. We are looking forward to three more days full of exciting program items.⚛️ #IYQ2025 ⤵️

Promotional graphic for a journal article titled 'Transport phenomena in microswimmer suspensions: Migration, collective motion,' by Takuji Ishikawa, featured in JFM Perspectives. The image includes an illustration of colorful microswimmers in a fluid environment.

Read the latest #JFMPerspectives article in @JFluidMech: "Transport phenomena in microswimmer suspensions: migration, collective motion, diffusion and rheology" by Takuji Ishikawa 
📚 https://cup.org/4mWqlgv
#JFM #OA

GPT-5 sucks!

Our most recent work is out on OCT flowmetry in organ-on-chip (OoC) devices, see rdcu.be/eytR3. In this work we took on the challenge of measuring very small flow speeds in a OoC device using particle-image velocimetry and number-fluctuation OCT.

Advertisement from the Royal Society of Chemistry featuring a hexagonal molecular structure with the text 'Peer review - Are you interested in materials science? Join us.'

Becoming a peer reviewer opens up a lot of opportunities, like building your knowledge and making new connections.
We’re looking for experts in materials science to review for us. Learn more➡️ buff.ly/WeUZL2E
#ChemSky

Le 2nd tome de "#Rhéophysique" est consacré aux fluides complexes, tels que les fluides viscoélastiques, ainsi que les fluides à seuil, les fluides rhéoépaississants et les cristaux liquides.
Plus d'info: bit.ly/4dZHGS7

thanks for the detailed explanation. now I understand the meaning of wrong in this context. and I find it an interesting problem. I look forward to reading the full paper!

And I forgot a very important thing. This project was conducted at @univie-physik.bsky.social and made possible by funding from @fwf-at.bsky.social

Interesting paper! Can you elaborate on what you mean by wrong?

The honor is all mine, dear @chhdellago.bsky.social

The Hitchhiker's Guide to Differential Dynamic Microscopy Over nearly two decades, Differential Dynamic Microscopy (DDM) has become a standard technique for extracting dynamic correlation functions from time-lapse microscopy data, with applications spanning ...

7/ 👩‍🔬 Whether you’re a soft matter physicist, biophysicist, or microscopy enthusiast—if you’re looking to measure dynamics without tracking, this guide is for you.

🧵 Read it, and use it!

💡 And reach out with feedback—fastDDM is community-driven!

📄 arxiv.org/abs/2507.05058

6/ 🧪 What can you do with this tutorial?
We guide you through:
✅ Particle sizing
✅ Merging fast & slow acquisitions
✅ Handling 2D vs. 3D dynamics
✅ Detecting axial drift & sedimentation
✅ Quantifying uncertainty
✅ Using image windowing
✅ Optimizing experimental design
…and more!

5/ 📊 Reproducibility first!
Each section is paired with Jupyter notebooks using real datasets.
🔄 You can follow every step, run the code, and adapt it to your system.
✅ Educational
✅ Extensible
✅ Transparent

GitHub - somexlab/fastddm: Python library for Differential Dynamic Microscopy analysis Python library for Differential Dynamic Microscopy analysis - somexlab/fastddm

4/ ⚙️ fastDDM
We introduce fastDDM—an open-source, high-performance Python package that speeds up DDM analysis by up to 4 orders of magnitude.
GPU + FFT + smart averaging = minutes instead of hours.

🔗 GitHub: github.com/somexlab/fas...
🔗 GitHub: github.com/somexlab/fas...

3/ 🎓 This is a comprehensive tutorial, not just a method paper.
We cover:
✔️ Physics of DDM
✔️ Mathematical foundations
✔️ Image formation
✔️ Practical data analysis
✔️ Common pitfalls
✔️ Real datasets & examples

2/ 🔍 What is DDM?
DDM analyzes time-lapse microscopy videos to extract dynamical information—without tracking particles. Think DLS + imaging.
✅ Works in bright-field, fluorescence, phase contrast, and more
✅ Resolves dynamics in space and time

1/ 🚀 New tutorial alert!
Ever wanted to use your microscope as a multi-angle light scattering device? Our new preprint is out:
📄 The Hitchhiker’s Guide to Differential Dynamic Microscopy (DDM)
arXiv: 2507.05058 (link in the last skeet!)
🧵 Thread ⬇️

Οι πιο iconic παραλίες της Ελλάδας (για Ιnstagram και μπάνιο) Ποιες είναι οι πιο όμορφες παραλίες της Ελλάδας; Μια λίστα με παραλίες στις Κυκλάδες, τα Επτάνησα, την Κρήτη.

A good excuse for posting after a long time is that one of my photos of Simos beach in Elafonissos was chosen for this article. Given my ❤️ for 🇬🇷, this makes me very 😀!

www.in2life.gr/article/2010...

Rector Sebastian Schütze at the Austrian pavilion at Expo2025 in Osaka.

Michael Wagner and Eva Horn talking about their research at the EXPO2025. Eva Horn presented how the cultural perception of climate changed over the millennia; and the importance of the microbial environment in and around us, the microbiome, was the topic for Michael Wagner.

The Austrian Pavilion at the EXPO2025.

Group photo of scientists at the "Building Future" event at the EXPO2025.

University of Vienna @ #Expo2025 in Osaka 🏛️
Internationally renowned experts from the University of Vienna gathered at the "Building Futures" event at #EXPO to highlight the range of innovative research & our joint effort of designing future society. 🧑‍🔬🧪
Read more: ⤵️
www.univie.ac.at/en/internati...

Trump Intends to Cancel All Federal Funds Directed at Harvard

This 👇 is getting scary. An act of oppression and violation of democracy.

Trump Intends to Cancel All Federal Funds Directed at Harvard www.nytimes.com/2025/05/27/u...

🚀 China Launches World's First Space-Based AI Supercomputer: 2,800 Satellites to Power the Next AI Frontier - TEC Spectrum China has launched 12 satellites in a 2,800-satellite AI supercomputer constellation, marking the world’s first space-based AI system. Learn how it works and why it matters.

Impressive. China will soon lead also in space!

tecspectrum.com/happenings/c...

Parrinello wins the 2025 ESI medal. Congratulations!

Intriguing application of DDM to the Xenopus cytoplasm!