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#Cells can surf, we maintain, with a revised version of our paper on #arXiv now !
What they need to be is nothing more than the schematic below – a treadmilling bar in frictional contact with a soft elastic substrate. If soft enough, #symmetry breaking occurs because of the #nonlocal #feedback of these friction forces via the substrate and the cell starts to move.
#mechanobiology of #cellmigration

7 views #Cells can surf, we maintain, with a revised version of our paper on #arXiv now ! What they need to be is nothing more than the schematic below – a treadmilling bar in frictional contact with a soft elastic substrate. If soft enough, #symmetry breaking occurs because of the #nonlocal #feedback of these friction forces via the substrate and the cell starts to move. #mechanobiology of #cellmigration

#PhD offer jointly between me in #Grenoble and Matteo Rauzi in #Nice: "#mechanics driving #tissue folding", an exciting #computational #physics and #biology project.
We will use (viscoelactic) #shells and (living) #fly embryos to understand a change of shape that is fundamental to #life.
http://liphy-annuaire.univ-grenoble-alpes.fr/pages_personnelles/jocelyn_etienne/epithelium_en/
#drosophila #bio

7 views #PhD offer jointly between me in #Grenoble and Matteo Rauzi in #Nice: "#mechanics driving #tissue folding", an exciting #computational #physics and #biology project. We will use (viscoelactic) #shells and (living) #fly embryos to understand a change of shape that is fundamental to #life. http://liphy-annuaire.univ-grenoble-alpes.fr/pages_personnelles/jocelyn_etienne/epithelium_en/ #drosophila #bio $Why call it surfing? Because it's the advected deformation of the substrate that moves the cell. Why advected? Because the cell moves. How is it possible? Eqn 1 is the "#surfing condition": \[0= \int_{-1}^{1} \Psi'(-v_p x)\left(1+\epsilon(x)\right) \mathrm{d}x\] where ε is substrate strain, 𝑣ₚ treadmilling speed, and Ψ the friction law (can be linear, although then… well, read the #preprint!) If$ 4 views Why call it surfing? Because it's the advected deformation of the substrate that moves the cell. Why advected? Because the cell moves. How is it possible? Eqn 1 is the "#surfing condition": \[0= \int_{-1}^{1} \Psi'(-v_p x)\left(1+\epsilon(x)\right) \mathrm{d}x\] where ε is substrate strain, 𝑣ₚ treadmilling speed, and Ψ the friction law (can be linear, although then… well, read the #preprint!) If

#PhD opening in Lab #Interdisciplinaire de #Physique, #Grenoble, in collaboration with @JonFouchard (Dev2A, Paris Sorbonne)
The objective is to investigate the #mechanics of fibrous #tissue, and specifically the #cell-driven short time active response, based on kinetic models of statistical #physics, and in connection with experiments where suspended microtissues are subjected to large strain.
htt

3 views #PhD opening in Lab #Interdisciplinaire de #Physique, #Grenoble, in collaboration with @JonFouchard (Dev2A, Paris Sorbonne) The objective is to investigate the #mechanics of fibrous #tissue, and specifically the #cell-driven short time active response, based on kinetic models of statistical #physics, and in connection with experiments where suspended microtissues are subjected to large strain. htt

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Recent: 5 text · 5 image · 0 video.

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🔥 Top post I've talked a lot as a member of the scientific community at #ScienceMastodon, now my #introduction as a researcher... with a separate account for that. My aim is to understand how living #cells and #tissues can actively change shape through the generation of internal #prestress… ★ 9

#PhD opening in Lab #Interdisciplinaire de #Physique, #Grenoble, in collaboration with @JonFouchard (Dev2A, Paris Sorbonne) The objective is to investigate the #mechanics of fibrous #tissue, and specifically the #cell-driven short time act… ★ 3 I'm wondering: #physics makes a lot of use of #periodic functions, in particular it is very useful to solve space-dependent equations in representative volumes with #periodicBoundaryConditions. However I've only seen it done with periodici… ★ 1

Why call it surfing? Because it's the advected deformation of the substrate that moves the cell. Why advected? Because the cell moves. How is it possible? Eqn 1 is the "#surfing condition": \[0= \int_{-1}^{1} \Psi'(-v_p x)\left(1+\epsilon… ★ 4

#Cells can surf, we maintain, with a revised version of our paper on #arXiv now ! What they need to be is nothing more than the schematic below – a treadmilling bar in frictional contact with a soft elastic substrate. If soft enough, #symm… ★ 7 The annual workshop of the GDR "Interfacial #SoftMatter" will take place in #Rennes next week #CNRS detailed program here: https://ism2023.sciencesconf.org/program/details For those not registered to attend the #workshop physically, they … ★ 1

#PhD offer jointly between me in #Grenoble and Matteo Rauzi in #Nice: "#mechanics driving #tissue folding", an exciting #computational #physics and #biology project. We will use (viscoelactic) #shells and (living) #fly embryos to understan… ★ 7 @academicjobs@a.gup.pe #Job offer: #PostDoc Position “#Stress transmission and #fracture in #collagen #networks” in Univ Grenoble Alpes 🥾⛰️ ⛷️ 👩‍🔬 👨‍🔬 🇫🇷 Join Mehdi Bouzid and myself for this project involving #MolecularDynamics simu… ★ 1 #Job offer: #PostDoc Position “#Stress transmission and #fracture in #collagen #networks” in Univ Grenoble Alpes 🥾⛰️ ⛷️ 👩‍🔬 👨‍🔬 🇫🇷 Join Mehdi Bouzid and myself for this project involving #MolecularDynamics simulations of a #biopolymer… ★ 2

Happy new 7(2+3+5+7)² ★ 2

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Nov 2022

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🗓️Joined Mastodon in 2022 — 3 years ago.

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66/100

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89%

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Est. 89% real, active audience · Low fake-follower risk.
Engagement (~4.4% of followers engage each post) is around typical for Mastodon.
Established account (3+ years old).

Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.

About

Playing with maths and mechanics for cell & developmental biology in a physics dept. #PartialDifferentialEquations resolution of #ContinuumMechanics (#ComplexFluids, #Elasticity) to model #Actomyosin in #CellMigration and #Morphogenesis at #Liphy (#CNRS and #UniversiteGrenobleAlpes) Professional account - my "social" account is @jocelyn_etienne

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$Why call it surfing? Because it's the advected deformation of the substrate that moves the cell. Why advected? Because the cell moves. How is it possible? Eqn 1 is the "#surfing condition": \[0= \int_{-1}^{1} \Psi'(-v_p x)\left(1+\epsilon(x)\right) \mathrm{d}x\] where ε is substrate strain, 𝑣ₚ treadmilling speed, and Ψ the friction law (can be linear, although then… well, read the #preprint!) If$

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