Bio-soft actuation @CNRS IUSTI, Aix-Marseille University

Marseille, France
Joined October 2018
Fresh off the press @NatureComms, our work on wing deployment in Drosophila 🪰: nature.com/articles/s41467-0… Work by: @HadjajeS, @Ignacio00432963, Marie-Julie Dalbe and Raphaël Clément
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Fresh off the press in @ScienceMagazine! @fluidity_x and Yoël’s work on the actuation of the Venus flytrap. 🪴⚡ No muscles. No nerves. So what powers the trap? Cutting the trap suppresses its mechanical amplifier, the snap-through instability, and reveals the active motion.
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Together, these measurements rule out rapid water transport or sudden turgor changes as drivers of closure. Instead, closure is triggered by rapid softening of the epidermal wall: bending comes from release of pre-stress in the turgid mesophyll after weakening of the outer layer
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Joel Marthelot retweeted
Ever since Charles Darwin proclaimed the carnivorous Venus flytrap one of the “most wonderful” plants in the world, scientists have been trying to work out how it snaps shut so quickly on its prey. A research team has now snapped a key piece of the puzzle in place. go.nature.com/4oktoRc
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The Venus flytrap is renowned for its ultrafast snap traps, which can capture insects in a fraction of a second. New research reveals that trap closure is triggered by a rapid softening of the epidermal cell walls, uncovering the physical mechanism behind this remarkable movement. Learn more this week in Science: scim.ag/4fG2Bg3
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Advertisement for an advanced course in Udine, Italy 🇮🇹 this summer ☀️. Learn about mechanics for the fabrication and programming of soft robots 🦑. cism.it/en/activities/course… organized along with @biosoftact
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La mouche drosophile est capable de prouesses pour déployer ses ailes l.sciencesetavenir.fr/H7M
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New preprint: arxiv.org/abs/2501.01875 "Dense array of elastic hairs obstructing a fluidic channel" Explanations below 🧵👇
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How insects deploy their wings. Highlight by @IBDMmarseille on Simon's paper in Nature Comms @NaturePortfolio: ibdm.univ-amu.fr/how-insects…
Fresh off the press @NatureComms, our work on wing deployment in Drosophila 🪰: nature.com/articles/s41467-0… Work by: @HadjajeS, @Ignacio00432963, Marie-Julie Dalbe and Raphaël Clément
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Joel Marthelot retweeted
Comment la mouche sortant de sa chrysalide déploie ses ailes en quelques minutes ? insis.cnrs.fr/fr/cnrsinfo/co… C'est un processus qui combine dépliement d'une structure et étirement du tissu cellulaire. @CNRSingenierie @CNRS Des recherches avec des applications dans le domaine des structures déployables ou de la robotique flexible
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#RésultatScientifique 🔎 | Comment la mouche déploie ses ailes 🔬 @biosoftact @iustiumr7343 🤝 @univamu @CNRS 📍 @CNRS_dr12 🔬 @IBDMmarseille 🤝 @univamu @CNRS 📍 @CNRS_dr12 @CNRSbiologie insis.cnrs.fr/fr/cnrsinfo/co…
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We measure the wing's mechanical properties by stretching it and its viscoelastic properties with nanoindentation
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By combining the wing's mechanics and microstructure, we predict the sweet spot the insect uses to deploy its wing at low pressure and what limits the speed of deployment
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