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Posts by Amir Rahmani

Great paper! It is in my to-do list to read it in details to discuss it with a colleague next week.

2 weeks ago 2 0 0 0
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New paper out 💥 3D cell-cell contact reconstitution with synthetic vesicles and (primary) immune cells to study how different proteins and carbohydrates influence the immune synapse dynamics.
advanced.onlinelibrary.wiley.com/doi/10.1002/...

3 weeks ago 28 8 0 1

Glad im not at FOM!

3 weeks ago 1 0 0 0

Would be good to have a chat with us so we can share our analysis too!

1 month ago 0 0 0 0

When I excite with 405 nm and collect in the 475/50 channel, I basically see nothing, no membrane, no puncta. But when I excite with 488 nm, I clearly see those lysosome-like puncta, and they overlap with LysoTracker Orange. This to me doesn't make sense as Laurdan shouldn't be excited at 488!

1 month ago 0 0 0 0

Thanks for sharing! I actually know that one, and yeah, I’m not surprised that Laurdan is colocalising with LysoTracker due to internalisation of Laurdan and accumulation in endo/lysosomal compartments.

What I’m still confused about is the excitation/emission behaviour.

1 month ago 0 0 1 0

Which CAD software has AI tools? I mainly use OnShape and haven’t seen any AI tools to pop up!

3 months ago 1 0 0 0
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0.28

3 months ago 2 0 0 0
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The one you have is UPlanSApo but they have a new version UPlanXApo. It’s very good!

3 months ago 1 0 2 0

You’ve got to get the new 60X/1.20 W.

3 months ago 1 0 1 0

Haven’t taken a flight in 14 months ✈️
Won’t take one until April either, which’ll make it 17.
Just a reminder that travel choices do add up for CO₂. One person skipping a flight doesn’t ground a plane, but lower demand over time does mean fewer routes and frequencies.

3 months ago 3 0 0 0
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Bored over the holidays? Give our new preprint on how #microtubule lattice alteration by taxols can regulate #RhoA #signalling via GEF-H1 a read!

Perhaps a new mechanism of action for taxol #chemotherapeutics during interphase.

www.biorxiv.org/content/10.6...

Happy holidays ✨🎄

3 months ago 20 6 1 0
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✨ Blinking #nanobodies that work for single-molecule localization 🔬
Our new preprint shows that the self-blinking dye JF635b restores robust, buffer-free blinking in #nanobodies, enabling reliable #dSTORM, #MINFLUX, and more, without chemical-switching buffers. Opening new possibilities for #ExM!

3 months ago 75 19 3 2

I was incredibly fortunate in this! The ups and downs were many but all those discussions helped make sense of a few scientific questions that are still ongoing and lead to further questions.

4 months ago 2 0 0 0
Large-field objective lens for multi-wavelength microscopy at mesoscale and submicron resolution <p>Conventional microscopes designed for submicron resolution in biological research are hindered by a limited field of view, typically around 1 mm. This restriction poses a challenge when attempting to simultaneously analyze various parts of a sample, such as different brain areas. In addition, conventional objective lenses struggle to perform consistently across the required range of wavelengths for brain imaging <italic>in vivo</italic>. Here we present a novel mesoscopic objective lens with an impressive field of view of 8 mm, a numerical aperture of 0.5, and a working wavelength range from 400 to 1000 nm. We achieved a resolution of 0.74 μm in fluorescent beads imaging. The versatility of this lens was further demonstrated through high-quality images of mouse brain and kidney sections in a wide-field imaging system, a confocal laser scanning system, and a two-photon imaging system. This mesoscopic objective lens holds immense promise for advancing multi-wavelength imaging of large fields of view at high resolution.</p>

This is one of the examples of designing a objective lens+tube lens and I was always wondering why they don't include the scan lens in the combo design.

www.oejournal.org/oea/article/...

4 months ago 1 0 1 0

I’d say there is no obvious reason for adding telecentricity! It would make the lens bulkier (i guess) but wouldn’t change the image quality that much!

4 months ago 0 0 0 0

Great stuffs!

4 months ago 1 0 0 0
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Tracking coordinated cellular dynamics directly from images -- New method paper by labmates @bgraedel.bsky.social & @macdobry.bsky.social ! Python package & @napari.org plugin, all the good stuff:

Paper: doi.org/10.1242/jcs....
Code: github.com/pertzlab/arc...
Plugin: github.com/pertzlab/arc...

4 months ago 47 17 1 0

Cool stuff! Congrats!

4 months ago 0 0 1 0
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New paper out! Combining single-objective light-sheet microscopy and time-resolved SPAD array detection, we massively accelerate fluorescence lifetime imaging (FLIM) compared to confocal FLIM, making FLIM applicable to 3D specimen such as organoids and embryos.
www.nature.com/articles/s42...

4 months ago 37 13 6 2

Interesting! So one can say the GSG's role is purely translational?

4 months ago 1 0 1 0

Hahaha!

4 months ago 1 0 0 0

Yup! Over 20 mm range, and at ambient and cryogenic conditions.

4 months ago 1 0 1 0
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The use of hexapod actuators is insane!

www.spiedigitallibrary.org/conference-p...

4 months ago 0 0 1 0

The telescope design is superb imo!

4 months ago 0 0 1 0
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Reviewer #3: Aberrations are all over the place!

4 months ago 1 0 2 0
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Protein codes and mobility together shape cellular function and disease Cells organize their biochemical activities by assembling proteins into both membrane-bound organelles and membrane-less condensates. These compartments enable specialized chemical environments that s...

www.cell.com/trends/bioch...

4 months ago 3 0 1 0
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The laser power was set to the max by the previous users!

4 months ago 1 0 0 0

COS7 cells?
I haven’t imaged them on either of those microscopes though!

4 months ago 0 0 1 0
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a person is holding an empty wallet in their hands and it is empty . ALT: a person is holding an empty wallet in their hands and it is empty .

Damn!

4 months ago 1 0 0 0