Joel Marthelot
@joelmarthelot.bsky.social
📤 356
📥 508
📝 22
BioSoftActuation @ CNRS Aix-Marseille Univ
https://biosoftact.wordpress.com
pinned post!
Fresh off the press, our work on wing deployment in Drosophila 🪰:
www.nature.com/articles/s41...
Work by: Simon Hadjaje, Ignacio Andrade-Silva, Marie-Julie Dalbe and Raphaël Clément
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over 1 year ago
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Benoit Ladoux
23 days ago
Happy to share our new paper on collective cell dynamics. Great work from Yuan Shen
@ijmonod.bsky.social
! Dynamic heterogeneity and hidden fluidity in dense epithelial tissues | Science Advances
www.science.org/doi/10.1126/...
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Dynamic heterogeneity and hidden fluidity in dense epithelial tissues
Densely packed epithelial tissues appear mechanically arrested at tissue scale, but their cells move in subtle, coordinated ways.
https://www.science.org/doi/10.1126/sciadv.aec3773
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Raphaël Clément
24 days ago
The division Physics and Life of the French Physical Society (SFP) organizes its fourth annual meeting in Lyon, July 9th & 10th! Join us and register here:
phys-life-2026.sciencesconf.org
Abstract submission deadline: May 30th
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Vermot Lab
26 days ago
🚨 How do mechanical forces shape a developing organ? Our new
#ScienceAdvances
@science.org
study, led by the amazing
@cvagenapantoula.bsky.social
, reveals a Piezo1-driven hydraulic mechanism, where mechanical cues control cell volume to guide cardiac formation ❤️🐟 🔗
www.science.org/doi/10.1126/...
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Piezo1-mediated mechanohydraulic control of cell volume drives cardiac morphogenesis
Mechanical forces shape the developing heart by controlling cell volume through a Piezo1-driven hydraulic mechanism.
https://www.science.org/doi/10.1126/sciadv.aea7025
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Nicola Trozzi
28 days ago
Check out our Insight on the beautiful work by Clark et al. 🌱 How can stochastic giant-cell fate lead to non-random epidermal patterns? Cell fate, endoreduplication, and growth all matter.
cup.org/3QYjVm0
@roederlab.bsky.social
@pauformosa.bsky.social
@matmajda.bsky.social
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How stochastic cell fate and endoreduplication yield non-random epidermal patterns | Quantitative Plant Biology | Cambridge Core
How stochastic cell fate and endoreduplication yield non-random epidermal patterns - Volume 7
https://cup.org/3QYjVm0
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Aissam Ikmi
about 1 month ago
Now published. Congrats to Soham and all co-authors!
www.science.org/doi/10.1126/...
.
@embl.org
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Alain Goriely
about 1 month ago
A new twist on an old problem. Great paper.
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Physics Magazine
about 1 month ago
Active materials could be used to make devices that spontaneously crawl over a difficult terrain—provided system-spanning networks are formed among the individual constituents of the system. Without the networks, microscopic activity remains local and the macroscopic response disappears.
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In Active Solids, Connectivity Is as Important as Activity
A robotic metamaterial shows that the odd mechanics of active solids depend on how the active constituents connect across the system.
https://physics.aps.org/articles/v19/49
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Joel Marthelot
Turlier lab
about 1 month ago
How can we learn tissue mechanics directly from cell patterns and images? In our new preprint, we introduce VertAX, a differentiable vertex-model framework in JAX for simulating epithelia, inferring parameters, and designing target tissue behaviors.
shorturl.at/PUzT0
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Hanumantha Rao Vutukuri
about 1 month ago
🔥Just out in
@science.org
Magazine 🔥 Our work on the emergent behavior of active polar rods is now online!
www.science.org/doi/10.1126/...
🌟 Even more exciting: the work is featured on the cover
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Hadrien Oliveri
about 1 month ago
Hot off the press 🚨 Epidemic spreading between regions is often modelled on a network 🕸️ But how do we describe this process properly? Here, we show how to build a linear transport operator at the network scale, by coarse-graining local advection-reaction-diffusion within edges.
shorturl.at/0tAN8
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Juan C. Landoni
about 2 months ago
Our paper is now out in Science! Super excited to share our discovery that
#mitochondria
#pearling
is the elusive mechanism driving the regular distribution and inheritance of
#mtDNA
nucleoids 🧬 [1/6]
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Nature Portfolio
about 2 months ago
Static electricity has puzzled researchers for centuries. Nature reports on the experiments that are finally making sense of its unruly behaviours. (Just don’t shuffle your feet on the carpet while reading this) ⚛️ 🧪
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Static electricity is a big mystery — a jolt of fresh research could help to solve it
The familiar phenomenon has puzzled researchers for centuries, but experiments are finally making sense of its unruly behaviours.
https://go.nature.com/4uvRlI2
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Neha Ghosh
2 months ago
I am excited to share my new paper in
@plosbiology.org
. Here we show the role of chitin, a polysaccharide, in controlling the shape of the fly corneal lens.
journals.plos.org/plosbiology/...
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Curvature of the Drosophila corneal lens depends on localized chitin secretion
How does the corneal lens in the fly eye acquire its light-focusing shape? This study shows that centrally located cells produce large amounts of chitin to form the thick central corneal lens, while p...
https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.3003725
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Claire Bedbrook
2 months ago
Aging may feel gradual… but what if it’s not? In our recent paper, we tracked fish continuously from puberty until death. This gave us a unique view of how aging unfolds across the adult lifespan. 🧵
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Maria Diaz de la Loza, Scientific Illustrator
2 months ago
I finally had some time to improve my poster about staging Drosophila embryos in collaboration with
@stramerlab.bsky.social
and we would like to share this with the community! You can find it here or at a higher resolution on my portfolio:
www.behance.net/gallery/2458...
#DrosophilaEmbryogenesis
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Pablo J. Sáez
2 months ago
This is why we love
#CalciumSignaling
Look how mechanical damage triggers long range Ca2+ waves in this plant !! By
@annalisabellandi.bsky.social
, who is now around here ;) Full
www.science.org/doi/10.1126/...
@science.org
#microscopy
#cell
#mechanobiology
🧪🔬
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Kaare H. Jensen
2 months ago
Our new paper is now out in PNAS: "The geometry of Nature’s stingers is universal due to stochastic mechanical wear."
doi.org/10.1073/pnas...
. Original artwork by John Sebastian
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APS DSOFT
3 months ago
Squishy Science Sunday is back at the Global Physics Summit! Join us for hands-on activities about physics, including the physics of slime, sand, and cotton candy! Find us at Denver Museum of Nature and Science. Use code APSSQUISHY26 for a discount on general admission tickets!
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Suraj Shankar 🏳️🌈
3 months ago
Delighted this paper is out! Soft solids fracture in complex ways. Can we control it using structure and activity? Yes, using defects that localize energy injection for targeted failure! Amazing work combining exp, theory & ML by Sheng Chen and collab with Murrell lab (Yale).
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Quanta Magazine
3 months ago
Sometimes, the only way to build back up is to let everything fall apart. This is certainly true at the cellular level.
www.quantamagazine.org/break-it-to-...
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Break It To Make It: How Fracturing Sculpts Tissues and Organs | Quanta Magazine
Growing tissues can crack, break, and dissociate to form structures that can later withstand immense forces.
https://www.quantamagazine.org/break-it-to-make-it-how-fracturing-sculpts-tissues-and-organs-20260227/
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Kirsty Wan
3 months ago
Great to see our paper on light-intensity dependent swimming patterns in
#Chlamydomonas
out now in Phys Rev Lett. as an Editors' suggestion! With a nice commentary by
@philipcball.bsky.social
. Chlamy actively modulate the beat planes of their
#cilia
!
journals.aps.org/prl/abstract...
#protistsonsky
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Rashmi Priya
3 months ago
Our latest with
@torres-sanchez.bsky.social
journals.biologists.com/dev/article-...
Breaking isn’t always a bad thing! Think of birth, seed release... We highlight how living tissue not only tolerates fractures but actively fracture to grow, shape, reproduce, or adapt – across species and scales.
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Break to build: fracture as a unifying morphogenetic strategy
Summary: This Review presents mechanical fracture as a unifying morphogenetic strategy and describes how developmental systems actively exploit mechanical fracture to drive morphogenesis, reproduction...
https://journals.biologists.com/dev/article-abstract/153/16/dev205136/370625/Break-to-build-fracture-as-a-unifyingBreaking
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Lukas Groschner
3 months ago
🚨 We are
#hiring
a PhD Student to study cerebellum-like circuits in
#Drosophila
. Please spread the word!
www.groschner-lab.org/join
#Neuroscience
#PhD
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Nathan Vani
3 months ago
Our article on multilayer inflatables has been published! A physics-computer graphics collab in which we introduce a new type of thin-sheet balloons and discuss their shape programming 🎈
@espciparispsl.bsky.social
@pmmh-lab.bsky.social
dl.acm.org/doi/pdf/10.1...
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Lochlan W
4 months ago
Excited to share my first PhD preprint! w/ Sören Kannegieser and
@anna-stoeckl.bsky.social
@insect-vision.bsky.social
We investigated how hawkmoths coordinate lateralized sensory and motor control for appendage guidance, revealing similar control principles to vertebrates
doi.org/10.64898/202...
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Etienne Jambon-Puillet
4 months ago
The paper is finally out in JFM 🎉🎊:
doi.org/10.1017/jfm....
Below is the thread summary of last year 👇
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Joel Marthelot
Brugues Lab
4 months ago
Really excited to share our new paper in
@nature.com
! We uncovered how a physical instability of the cytoplasm coupled with the cell cycle drives cytoplasmic partitioning in early embryos
#zebrafish
#drosophila
. Read more in this🧵
www.nature.com/articles/s41...
🤩
@poldresden.bsky.social
@mpi-cbg.de
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Raphaël Clément
4 months ago
Super happy to share the exciting work of Emma Legait, showing how neighbourhood composition determines cancer stem cell fate in hierarchical tumours. A great and long-standing collaboration with
@cedricmaurange.bsky.social
www.biorxiv.org/content/10.6...
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Lucia Stein-Montalvo
4 months ago
More about our latest collaborative work... “Architectural Swarms for responsive façades and creative expression” is now published in Science Robotics
@science.org
! Read it here:
science.org/doi/10.1126/scirobotics.ady7233
.
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Hadrien Oliveri
4 months ago
Job alert🚨I am advertising a 2-year postdoctoral position to work on the mathematics of plant morphogenesis
@mpipz.bsky.social
. Candidates with interests in mathematical modelling, mechanics, or biophysics are strongly encouraged to apply. 🌱Reposts are appreciated!
jobs.mpipz.mpg.de/jobposting/4...
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Alice Auersperg
4 months ago
Our new paper (with
@biotay.bsky.social
) is out and on the cover story of
@currentbiology.bsky.social
!!!! Veronika, a Carinthian mountain cow flexibly uses a “multi-purpose tool” to scratch herself. A video and more information will follow in the comments.
www.cell.com/current-biol...
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Brugues Lab
5 months ago
Excited to share Alison's
@alisonkickuth.bsky.social
paper from the lab out in
@nature.com
this week! We uncovered how a mechanical ratchet mechanism drives cytokinesis in early
#zebrafish
embryos. Read more in this thread 🧵 and at
www.nature.com/articles/s41...
🤩
@poldresden.bsky.social
@mpi-cbg.de
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eLife
5 months ago
The most recognisable feature of the human brain is its folds. So why do other animals’ brains look so different?
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The rise of brain folds
Differences in brain folding between species can be explained by variations in initial brain size, shape and cortical growth rate, rather than by different folding mechanisms.
https://buff.ly/vIgS5jg
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Vermot Lab
5 months ago
Check out our latest preprint on the cellular mechanical basis of Voronoi tessellations in epithelia! This biophysics study is inspired by disordered tessellations observed in zebrafish hearts 🤓🐟💙
#SulaimaanLim
#ChiuFanLeeLab
arxiv.org/html/2512.13...
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Shashi Thutupalli
5 months ago
Non-motile microbes are not prisoners of diffusive transport. Just their metabolic activity can be sufficient to stir up the ambient fluid and cause explosive long-range dispersal -- a "metabolic firework". Our latest work --
arxiv.org/abs/2512.16288
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eLife
5 months ago
The study shows how individual fingerprint ridges deform when we touch different textures, revealing how subtle stretching and shifting along the ridge flanks may drive our remarkably fine tactile sensitivity.
buff.ly/4z67Vf1
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Nature
5 months ago
Nature research paper: Quantifying grain boundary deformation mechanisms in small-grained metals
go.nature.com/48vtZcJ
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Quantifying grain boundary deformation mechanisms in small-grained metals - Nature
Experimental observations in small-grained polycrystals suggest a new concept of considering metallic grain boundaries not as defects but as separate defect-containing lattices, providing a potential explanation for the deformation behaviour of nanocrystalline metals.
https://go.nature.com/48vtZcJ
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Nicole Sharp
5 months ago
As humanity pumps carbon dioxide into the atmosphere, the ocean absorbs about a quarter of it. This exchange happens largely through bubbles created by breaking waves.
fyfluiddynamics.com/?p=26003
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Proceedings of the National Academy of Sciences
6 months ago
Researchers propose a method of manipulating small particles by using acoustic levitation and electrostatic charging, leveraging electrostatic repulsion and acoustic attraction to expand and collapse structures as needed. In PNAS:
https://ow.ly/LKIK50XC71T
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Oxford Mathematics
6 months ago
Where on earth is the best laboratory to demonstrate the beauty of fluid dynamics? Actually, it’s not on earth. Here is the story of the soft cell. And a longer read:
www.maths.ox.ac.uk/node/74308
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Giacomo Bartolucci (he)
6 months ago
Active droplets are fundamental in cell biology and origin of life. With Jonathan Bauermann,
@boekhovenlab.bsky.social
, Frank Jülicher, and
@m-pol.bsky.social
, we show that a critical transition influences their size, morphology, ripening and division propensity
journals.aps.org/prx/abstract...
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Isabelle Eisenmann
6 months ago
Our work on hydrodynamic instabilities in active jets is on the cover of PRL this week!
journals.aps.org/prl/abstract...
A dialogue between experiment and theory, where we use light to control active suspensions and show how they can be destabilized by their self-generated flows
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Pure Hydrodynamic Instabilities in Active Jets of Puller Microalgae
Using phototaxis to control cell orientation, various instabilities can be induced in jets of motile microalgae.
https://journals.aps.org/prl/abstract/10.1103/jjcv-ygvq
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Physics Magazine
7 months ago
Coaxing tiny, self-propelled particles into cohesive structures provides one route to making micromachines. Taking a step in that direction, researchers have measured and analyzed the mechanical properties of materials assembled from active particles.
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Active Matter Gets Solid
Researchers have determined the mechanical properties of a tiny beam made of active particles, laying the groundwork for future micromachines.
https://physics.aps.org/articles/v18/176
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Suraj Shankar 🏳️🌈
7 months ago
Excited to be at ICTS for the school on Geometry, Mechanics and the Physics of Growth, co-organized with Ganga Prasath (IITM) and
@joelmarthelot.bsky.social
(Aix-Marseille)! Fantastic start with a lecture on continuum elasticity by
@abigailplummer.bsky.social
(BU)
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Joel Marthelot
Campàs Lab
7 months ago
Really excited to present the results of a fantastic collaboration with Jesse Veenvliet
@jesseveenvliet.bsky.social
@mpi-cbg.de
@poldresden.bsky.social
🤩 We find a unique mechanism for body axis elongation in mammals, different from other vertebrate species ➡️
www.biorxiv.org/content/10.1...
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Science Magazine
7 months ago
Static electricity may be key to helping a tiny roundworm latch onto its insect hosts. Like a heat-seeking missile, the parasite zooms up to 10 millimeters in the air before getting yanked toward its target by nothing more than the electrostatic charge of its host.
https://scim.ag/3WKFVjZ
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Proceedings of the National Academy of Sciences
7 months ago
Sharpen your knives! High-speed video analysis reveals that blunt knives and faster cutting speeds release more eye-irritating droplets from onions by building pressure under the onion’s skin before the ejection of the tear-inducing aerosols. In PNAS:
https://ow.ly/5rc750Xcvhj
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Pierre-François Lenne
7 months ago
Appreciate Quanta for shining a light on our joint work with Simon Gsell, Sham Tlili (
@shamtlili.bsky.social
), and Matthias Merkel (
@merkellab.bsky.social
).
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Etienne Jambon-Puillet
8 months ago
Did you know you can manipulate hundreds of microparticles using phototactic algae? This is what we show in our last preprint, led by T. Laroussi and J. Bouvard:
arxiv.org/abs/2509.08133
🧵👇
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Arif Ashraf
8 months ago
🍀🔬 MSL10 is a high-sensitivity mechanosensor in the tactile sense of the Venus flytrap
@natcomms.nature.com
from Toyota lab.
www.nature.com/articles/s41...
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