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Laurent Cognet

@laurentcognetbx.bsky.social
66 followers 65 following 6 posts

Physicist in academia. CNRS Research Director with interests in high resolution optical microscopy, nanoscience, biophysics & neurophotonics. www.cognet-research.com LP2N -Institut d'Optique Graduate School, CNRS, University of Bordeaux

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Laurent Cognet @laurentcognetbx.bsky.social · 10/05/2026
A milestone I had been chasing for a long time. The key idea: using carbon nanotubes as perfect tunable 1D dipoles at the single-particle level, together with a dipole spread function engineering approach. Great collaboration with Jana Zaumseil, Ben Flavel, Sophie Brasselet, and Laurent Groc
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Reposted by Laurent Cognet
Yann Fichou @fichoulab.bsky.social · 13/06/2025
Indeed, we are looking of a PhD student at the interface between chemistry, biophysics and biology to work on light induced LLPS. join us at @iecb.bsky.social in Bordeaux !
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Laurent Cognet @laurentcognetbx.bsky.social · 22/05/2025
This is a great collaboration with the amazing labs of Jana Zaumseil, Laurent Groc and Erwan Bezard
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Laurent Cognet @laurentcognetbx.bsky.social · 22/05/2025
Key Highlights: 🔹 High brightness combined with nanoscale size 🔹 Nonlinear photoluminescence behavior under varying excitation conditions 🔹 PL quantum yields up to 20% 🔹 Demonstration of high-resolution, 3D single-particle tracking in thick brain tissue
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Laurent Cognet @laurentcognetbx.bsky.social · 22/05/2025
🔥 Our latest research on ultrashort carbon nanotubes (uCCNTs) with luminescent color centers has been published in ACS Nano! We've discovered that these uCCNTs are exceptionally bright in the NIRII window, making them ideal for advanced bioimaging, photonics, and quantum science applications.
pubs.acs.org
Ultrashort Carbon Nanotubes with Luminescent Color Centers Are Bright NIR-II Nanoemitters
In the fields of bioimaging, photonics, and quantum science, it is equally crucial to combine high brightness with a nanoscale size in short-wave infrared (SWIR) emitters. However, such nanoemitters a...
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Reposted by Laurent Cognet
Université de Bordeaux @univbordeaux.bsky.social · 11/03/2025
📻 Les cellules souches offrent à la recherche une nouvelle voie d’exploration thérapeutique pour de nombreuses maladies. Comment les exploiter ? Le point dans @sciencecqfd.bsky.social @franceculture.fr avec notamment Pierre Nassoy du LP2N* et fondateur de Treefrog : www.radiofrance.fr/f...
radiofrance.fr
Thérapie cellulaire : ça coule de souche
Les cellules souches utilisées en recherche sont soit directement issues de l’embryon soit induites à la pluripotence à partir de cellules adultes différenciées. Ces dernières offrent à la recherche une nouvelle voie d’exploration thérapeutique pour de nombreuses maladies. Comment les exploiter ?
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Laurent Cognet @laurentcognetbx.bsky.social · 06/02/2025
Happy to share our latest preprint rb.gy/py8q7a in which we demonstrate that ultrashort carbon nanotubes have astonishing brightness in the SWIR which propels them as amazing probes for bio-imaging in brain tissue (here in 3D SPT experiments). Yes, brighter than quantum dots and in the SWIR!
doi.org
Ultrashort Carbon Nanotubes with Luminescent Color Centers are Ultrabright NIR-II Nano-Emitters
Combining brightness and nanoscale size of short-wave infrared (SWIR) emitters is equally essential in the fields of bioimaging, photonics, and quantum science, but such nano-emitters are still lackin...
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