Sign in

Johannes Hohlbein

@hohlbeinlab.bsky.social
2.8K followers 1.3K following 636 posts

Single-molecule stuff, 🔬, 🦠 , 🧬, ☕, BTU, WUR, he/him, 🇩🇪->🇨🇿->🇩🇪->🇬🇧->🇳🇱+🇩🇪, Pubs: scholar.google.nl/citations?hl=en&u…

PostsRepliesMedia
Johannes Hohlbein @hohlbeinlab.bsky.social · 18/09/2026
How is it going? Problems with prototype autofocus/focus stabilization performance => ask microscopy company to demo their microscope body with (perfect) focus stabilization => focus stabilization unit apparently currently broken awaiting repair... Kafka is calling.
000
Johannes Hohlbein @hohlbeinlab.bsky.social · 13/09/2026
(Cross post LinekdIn) V0.12.1 of #webSMLM released with inbuilt terminal functionality and experimental #smFRET (ALEX-TIRF) implementation.
GUI web interface of #webSMLM showing time traces and E/S histograms of smFRET data
070
Reposted by Johannes Hohlbein
Christoph Dellago @chhdellago.bsky.social · 07/09/2026
If you are like me, you start every morning by making yourself a coffee with a moka pot. ☕️ While you wait for the coffee to bubble up, you can now explore how it works: compphys.univie.ac.at/Moka I made this (thank you, Claude!) for my thermo and stat phys course, but perhaps you enjoy it too.
43810
Johannes Hohlbein @hohlbeinlab.bsky.social · 05/09/2026
(LinkedIn cross post) 0.12.0 of #webSMLM released. Work mainly by @kjamartens.bsky.social introduced live streaming and real time analysis from frames recorded in MicroManager or Python. hohlbeinlab.github.io/webSMLM/webS...
0214
Johannes Hohlbein @hohlbeinlab.bsky.social · 21/08/2026
(LinkedIn cross post) 0.11.3 of #webSMLM released. Since 0.11.0 we added: headless spectral SMLM runs, *.ND2 loading, single particle tracking (sptPALM, Nile red PAINT, etc), light (see below), dark or high contrast mode; *.svg export of plots, change to MIT license,... (1/2)
User interface of webSMLM, center window histogram of diffusion coefficients of Nile Red diffusing in bacterial cell wall, right window bacterial cell outlines of L. actis stained with Nile Red.
141
Johannes Hohlbein @hohlbeinlab.bsky.social · 17/08/2026
Update: #webSMLM (V0.11.0), a browser-based single-molecule localisation microscopy analysis tool, includes 2D/3D phasor/MLE fit, background correction, simulations, 3D drift correction, fast temporal median filtering, rendering, spectrally resolved SMLM (!),.. hohlbeinlab.github.io/webSMLM/webS...
Pic shows STORM data of fixated Cos7 cells with CF660-labeled clathrin and CF680-labeled tubules (cells: Lorenzo Albertazzi's lab). Colour coding represents emission wavelength dependent distance between 0th and 1st order.Picture of the webSMLM user interface
0176
Reposted by Johannes Hohlbein
Glen Dsouza @nonresidentdesi.bsky.social · 10/08/2026
📣 We’re hiring a postdoc for @hot-mes-asu.bsky.social ! 🦠🔬 We’re looking for someone excited about microbial interactions, ecology & evolution, and using molecular genetics and microfluidics to understand microbial communities. Come do fun science with us! apply.interfolio.com/190859
02626
Reposted by Johannes Hohlbein
Stephen Turner @stephenturner.us · 03/05/2026
Free and open-source images, icons, and tools for creating scientific illustrations doi.org/10.59350/5zt... 🧪
doi.org
Free and open-source images, icons, and tools for creating scientific illustrations
Phylopic, NIH Bioart, Bioicons, Scidraw, Open Science Art, Health Icons, Servier Medical Art, Biodiversity Heritage Library, the Noun Project, Segment Anything, Excalidraw, draw.io, Biographics
6406227
Johannes Hohlbein @hohlbeinlab.bsky.social · 20/07/2026
Want to analyse SMLM data on your phone (or any other browser)? Here we go: hohlbeinlab.github.io/webSMLM/webS..., repo on GitHub #webSMLM
Super-resolved image of DNA nanorulers.
094
Reposted by Johannes Hohlbein
Luke Lavis @rhodamine110.bsky.social · 17/07/2026
Excited to see this collaboration now in print. Dye chemistry meets AI-designed proteins. Three small, orthogonal tags; lifetime modulation; split versions. Request the free dyes at dyes.janelia.org www.science.org/doi/10.1126/...
science.org
De novo design of orthogonal far-red, orange, and green fluorophore-binding proteins for multiplexed imaging
Fluorescent proteins and small-molecule dyes offer complementary advantages for biological imaging: proteins are amenable to genetic tagging, whereas dyes provide superior brightness and photostabilit...
010839
Reposted by Johannes Hohlbein
Dr Dan Jones @hookean.bsky.social · 10/07/2026
Here is the Physics Worksheet Generator. It has taken some time to get to this stage, but it currently covers GCSE and A-Level for most exam boards. Feedback welcome for errors or improvements. I will continue to work on it. I hope you find it useful #iTeachPhysics www.drjonesphysics.com/pwg
162
Johannes Hohlbein @hohlbeinlab.bsky.social · 10/07/2026
Nothing fancy, just some old sample doing things earlier today. #FlourescenceFriday
060
Reposted by Johannes Hohlbein
Cees Dekker @ceesdekker.bsky.social · 16/06/2026
WORK: our Bionanoscience department at TU Delft is looking to hire an Assistant Professor in Biophysics of Living Systems. Apply! Deadline 30 July careers.tudelft.nl/job/Delft-As... RT=nice
careers.tudelft.nl
Assistant Professor in Biophysics of Living Systems
Assistant Professor in Biophysics of Living Systems
02832
Reposted by Johannes Hohlbein
Dr Dan Jones @hookean.bsky.social · 27/06/2026
I have created over 100 free apps and simulations covering all major GCSE and A-Level Physics topics. Explore them here: #iTeachPhysics #Science 🧪 www.drjonesphysics.com/apps
14712
Johannes Hohlbein @hohlbeinlab.bsky.social · 19/06/2026
You might have heard about our GitHub repository on #OpenMicroscopy. I finally vibecoded a page that (a) allows to search all entries and (b) generates a new database as soon as items are added on GitHub: hohlbeinlab.github.io/OpenMicrosco... Check it out and comments welcome!
hohlbeinlab.github.io
Open Microscopy — Resource Index
1122
Johannes Hohlbein @hohlbeinlab.bsky.social · 19/06/2026
Expansion cat. 🐈
Cat stretched along a wall.
050
Reposted by Johannes Hohlbein
Jens Schmidt @jenscs83.bsky.social · 11/06/2026
I am looking to recruit 2 postdoctoral fellows to the lab to work on a recently funded project focused on class switch recombination in B cells. If you are interested in immunology, gene expression, and RNA and protein single molecule imaging, please reach out (schmi706@msu.edu). Please share!
11713
Johannes Hohlbein @hohlbeinlab.bsky.social · 09/06/2026
When chatGPT is drunk..
Question on what is a DNA hydrogel and chatGPT showing a widget with a plot of f(x)=x function.
010
Reposted by Johannes Hohlbein
Naomi Chrispijn-Steenbeek @naomichrispijn.bsky.social · 08/06/2026
Join the NWO Physics of Life Seminar on 19 June at Utrecht Science Park Talks by Anna Erzberger (EMBL), Christian Kaiser (UU), Felix Frey (TU/e), Justin Tauber (WUR) Iris Smokers (MPI-CBG) Register <15 June shorturl.at/0VGb7 Organized by @floberger.bsky.social and @uddaloksen.bsky.social
shorturl.at
NWO Physics of Life seminar | NWO
The NWO physics of life research community committee welcomes you for a new seminar on June 19, 2026, at Utrecht Science Park. The seminar has an international keynote speaker, dr. Anna Erzberger (EMB...
022
Johannes Hohlbein @hohlbeinlab.bsky.social · 19/05/2026
Ordering stuff for the lab is fun. Now I have white board markers but no white board and, even better, two new displays yet the delivery of the PCs got delayed to September 2026... Uff.
041
Reposted by Johannes Hohlbein
Lorenzo Olivi @loreoliv.bsky.social · 11/05/2026
🧵 New pre-print out from my time at @mib-wur.bsky.social showing how the titration of the initiator protein DnaA on the chromosome of E. coli can generate stable DNA replication @hohlbeinlab.bsky.social @nicoc-micsynmet.bsky.social doi.org/10.64898/202...
163
Johannes Hohlbein @hohlbeinlab.bsky.social · 07/05/2026
The "Witch of Agnesi" is not what I thought it would be. According to Wikipedia: a cubic plane curve defined from two diametrically opposite points of a circle.
000
Johannes Hohlbein @hohlbeinlab.bsky.social · 04/05/2026
Rough scaffolding of setup #2 done at Brandenburgische Technische Universität Cottbus-Senftenberg. Can actually test here the earlier reported effective vibration isolation for #SMLM using a bicycle inner tube. (Cross post LinkedIn)
Custom microscopy build using a ASI Ramm scaffolding system.
070
Johannes Hohlbein @hohlbeinlab.bsky.social · 25/04/2026
Moved some microscopy equipment last week to the new lab. Happy building. (Cross post LinkedIn)
Some Nikon microscopy objectives Trunk of a car full of microscopy equipment.
0110
Johannes Hohlbein @hohlbeinlab.bsky.social · 17/04/2026
Giving a lecture at Friday 8am is wild. Let’s see.
060
Johannes Hohlbein @hohlbeinlab.bsky.social · 04/04/2026
In academia this weird age is between the age of 25 and 55. At least. Am I right?
140
Johannes Hohlbein @hohlbeinlab.bsky.social · 22/03/2026
Quick career update. Since beginning of March, I am appointed as Professor of Biosensorics at the Brandenburg University of Technology (BTU, Germany). Expect more single-molecule and single-cell inspired stuff & #OpenMicroscopy soonTM (🧬,🧫,🔬,🧪).
Blue sky at dusk overlooking the marina of lake Senftenberg close to the university. At this time of the year still without boats.
4461
Johannes Hohlbein @hohlbeinlab.bsky.social · 08/03/2026
Was about to build a new PC for SMLM detection. Memory is ~500 Euros for 32Gb?!?!?! What?
130
Johannes Hohlbein @hohlbeinlab.bsky.social · 03/03/2026
Guess we are living in the future now. Just submitted a manuscript and the website retrieved most information (abstract, names, etc) from the submitted files. I did not have to type everything again! 🤯 (disclaimer: keywords and authors’ contributions were not automatically detected...)
030
Reposted by Johannes Hohlbein
Dolf Weijers @dolfweijers.bsky.social · 03/03/2026
We are very excited to share a new resource from our team: spatial subcellular proteome maps in plants! We developed an MS-based method that registers localizations of about 8000 proteins in Arabidopsis roots in a single experiment. (1/9) www.biorxiv.org/cgi/content/...
biorxiv.org
212071
Johannes Hohlbein @hohlbeinlab.bsky.social · 26/02/2026
Coordinated call for applications for three (!) thematically related professorships (cell physiology, molecular genetics, and biochemistry) at BTU Cottbus-Senftenberg (Germany) (thread)
112
Reposted by Johannes Hohlbein
Jean-Yves Tinevez @jytinevez.bsky.social · 09/02/2026
New preprint alert! We developed an automated framework to optimize tracking pipelines for bacteria, along with a nice integration of tools for bacteria imaging, in the recently released TrackMate 8 (Fiji plugin). www.biorxiv.org/content/10.6... 👇🧵
biorxiv.org
25418
Reposted by Johannes Hohlbein
Dr Dan Jones @hookean.bsky.social · 02/02/2026
I have created an app to help students learn about emission and absorption spectra. Here is the link. I hope you find it useful 🌟 #iTeachPhysics #Science 🧪 #Astronomy 🔭 sites.google.com/view/hookean...
3307
Reposted by Johannes Hohlbein
Séamus Holden 🔬🦠🧫 @seamusholden.bsky.social · 02/02/2026
iCASE PhD project available in my lab, combining microscopy method development with high throughput screening of bacteria. Applications to antibiotic drug discovery and screening for new cell division proteins. Collaboration with Cairn Research #microsky #bioimaging www.findaphd.com/phds/project...
findaphd.com
Image-based bacterial phenotyping and antimicrobial drug discovery using smart high-throughput super-resolution microscopy at University of Warwick on FindAPhD.com
PhD Project - Image-based bacterial phenotyping and antimicrobial drug discovery using smart high-throughput super-resolution microscopy at University of Warwick, listed on FindAPhD.com
01411
Reposted by Johannes Hohlbein
Achilles Kapanidis @achilleskap.bsky.social · 30/01/2026
Great to see our Science Review on emerging multiplexed single-molecule methods that use libraries to link sequence to dynamics. A fun collaborative writing project! From sequence to function: Bridging single-molecule kinetics and molecular diversity | Science www.science.org/doi/10.1126/...
science.org
From sequence to function: Bridging single-molecule kinetics and molecular diversity
Biological function is fundamentally determined by nucleic acid and protein sequence. Beyond encoding genetic information, nucleic acids also display complex physicochemical parameters that shape stru...
2238
Johannes Hohlbein @hohlbeinlab.bsky.social · 29/01/2026
Current mood.
Wings of three planes. One of them showing a cartoon mouse.
140
Johannes Hohlbein @hohlbeinlab.bsky.social · 27/01/2026
The Laboratory of Biophysics at Wageningen University & Research (NL) is looking for a new chair! Details here: www.wur.nl/en/vacancy/f...
wur.nl
Full Professor and Chair Laboratory of Biophysics
We are looking for a Full Professor in the Biophysics chair group, part of Wageningen University & Research (WUR)
11017
Johannes Hohlbein @hohlbeinlab.bsky.social · 26/01/2026
Good resource for everyone interested in objectives and microscopy 👇
083
Johannes Hohlbein @hohlbeinlab.bsky.social · 25/01/2026
@healthcare.nikon.com or others: Where can I find information on the field number of Nikon objectives? Seems missing from the objective comparison site? Specifically wondering about the CFI Apochromat TIRF 60XC Oil.
110
Johannes Hohlbein @hohlbeinlab.bsky.social · 19/01/2026
First rule when receiving a unsolicited chain mail at uni: REPLY ALL and say that you want to be removed from the list...
190
Reposted by Johannes Hohlbein
Kyle M. Douglass @kmdouglass.bsky.social · 13/01/2026
I finally got around to writing the discussion section of our lab's basic training course on live cell #microscopy. I explain the tradeoffs involved in designing an imaging experiment and the art of thinking of the experiment as an optimization problem. leb-epfl.github.io/basic_traini...
leb-epfl.github.io
Introduction - Microscopy Basic Training
1144
Reposted by Johannes Hohlbein
Jason Rasgon @vectorgen.bsky.social · 01/08/2023
I guess I should re-post from the Bird Site "The Rules For Academic Success here": I always get asked for advice about starting/surviving the tenure track. Here are the rules I've found useful. Thought I'd put it out there for the masses... This list gets longer all the time
515474
Johannes Hohlbein @hohlbeinlab.bsky.social · 07/01/2026
TIL: 5 cm snow all over the Netherlands equates to around 300 billion kg of snow. nos.nl/liveblog/259...
nos.nl
Drukste woensdagochtendspits in jaren • NS roept mensen op treinreis uit te stellen
In dit liveblog houden we je op de hoogte van het aanhoudende winterse weer in Nederland.
030
Reposted by Johannes Hohlbein
Dina Grohmann @curiousdina.bsky.social · 05/01/2026
A new year brings new opportunities: we are looking to fill a permanent professorship position with a Microbiologist preferably with expertise on archaeal biology, RNA biology or imaging techniques to unravel cell biology in prokaryotes! Please share and/or apply :)! www.nature.com/naturecareer...
nature.com
Professurship (W2) in Microbiology - Regensburg (Stadt), Bayern (DE) job with Universität Regensburg | 12851113
UNIVERSITY OF REGENSBURG   The Faculty of Biology and Pre-Clinical Medicine invites applications for a   Professurship (W2) in Microbiology   To be...
03344
Reposted by Johannes Hohlbein
Daniel Gorelick @danielgorelick.bsky.social · 31/12/2025
2025 was the year we stopped debating whether paying peer reviewers might work and started showing that it does.
3209
Johannes Hohlbein @hohlbeinlab.bsky.social · 02/01/2026
I vaguely remember seeing a discussion about lab-onboarding etc on Twitter many years ago. This initiative below and the handbook look really valuable. Will implement.
161
Johannes Hohlbein @hohlbeinlab.bsky.social · 01/01/2026
“Coffee doesn't talk, coffee doesn't whine, coffee just does its job. I like coffee.” Happy new year!
151
Johannes Hohlbein @hohlbeinlab.bsky.social · 24/12/2025
Perspective is everything in life.
Picture of Halle (Saale) with a giant Christmas pyramid, the Market Church and the Red Tower. Somewhere hidden between Christmas market stands a statue of Händel can be seen.
120
Johannes Hohlbein @hohlbeinlab.bsky.social · 22/12/2025
Remarkable. I have many questions.
Legendary old Trabant car from East Germany with extensive Christmas decoration.
121
Reposted by Johannes Hohlbein
Achilles Kapanidis @achilleskap.bsky.social · 05/12/2025
New preprint! We share a new *DNA-only* method for single-molecule DNA sequencing, and use this cool tool to link single-molecule reactions/interactions to sequence. Big thanks🙏 to Jagadish Hazra @becs-andrews.bsky.social and all contributors since our 2016 start! www.biorxiv.org/content/10.1...
biorxiv.org
Unraveling single-molecule reactions via multiplexed in-situ DNA sequencing
DNA sequence regulates complex reactions and protein-DNA interactions, yet sequence effects remain poorly understood due to the lack of direct, high-throughput approaches to study sequence-dependence ...
182