Joel Marthelot
@joelmarthelot.bsky.social
Join us this Fall at ICTS for an advanced course on Geometry, Mechanics & the Physics of Growth: www.icts.res.in/program/Geom... Co-organized with S. Ganga Prasath & @surajshankar.bsky.social
April 16, 2025 at 8:48 AM
Join us this Fall at ICTS for an advanced course on Geometry, Mechanics & the Physics of Growth: www.icts.res.in/program/Geom... Co-organized with S. Ganga Prasath & @surajshankar.bsky.social
Thanks Artem! Here are top & side views. The ptilinum - an eversible pouch on the fly’s head - strongly inflate, then deflates quickly after deployment
December 15, 2024 at 9:43 AM
Thanks Artem! Here are top & side views. The ptilinum - an eversible pouch on the fly’s head - strongly inflate, then deflates quickly after deployment
Yes ⏰! Most of the deployment is completed in just 2 minutes!
December 13, 2024 at 9:21 PM
Yes ⏰! Most of the deployment is completed in just 2 minutes!
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
December 11, 2024 at 2:00 PM
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
We measure the wing's mechanical properties by stretching it and its viscoelastic properties with nanoindentation
December 11, 2024 at 2:00 PM
We measure the wing's mechanical properties by stretching it and its viscoelastic properties with nanoindentation
On a smaller scale, the plates are made of cells covered by wrinkled cuticle. Deployment is a two-scale process: macroscopic origami unfolds, while cells stretch and the cuticle unwrinkles
December 11, 2024 at 2:00 PM
On a smaller scale, the plates are made of cells covered by wrinkled cuticle. Deployment is a two-scale process: macroscopic origami unfolds, while cells stretch and the cuticle unwrinkles
Microtomography shows the wing is made of two thin plates supported by pillars, inflating like an air mattress. Unlike man-made structures the wing surface stretches as it unfolds
December 11, 2024 at 2:00 PM
Microtomography shows the wing is made of two thin plates supported by pillars, inflating like an air mattress. Unlike man-made structures the wing surface stretches as it unfolds
Using fluorescent tracers, we track blood flow in the wing. Unlike adults, where it stays in the veins, the blood spreads through the entire wing
December 11, 2024 at 2:00 PM
Using fluorescent tracers, we track blood flow in the wing. Unlike adults, where it stays in the veins, the blood spreads through the entire wing
The insect boosts its blood pressure by gulping air to inflate its gut like a balloon 🎈and squeezing its abdominal muscles
December 11, 2024 at 2:00 PM
The insect boosts its blood pressure by gulping air to inflate its gut like a balloon 🎈and squeezing its abdominal muscles
This happens thanks to a rapid increase in the insect’s blood pressure. We measured it: the pressure builds up, reaches a plateau, and the wings deploy!
December 11, 2024 at 2:00 PM
This happens thanks to a rapid increase in the insect’s blood pressure. We measured it: the pressure builds up, reaches a plateau, and the wings deploy!
In their final transformation, insects break out of their chrysalises and unfold their origami-like wings into rigid, flight-ready surfaces. This process is nearly identical for every fly. We’re diving into the mechanics behind this wonder!
December 11, 2024 at 2:00 PM
In their final transformation, insects break out of their chrysalises and unfold their origami-like wings into rigid, flight-ready surfaces. This process is nearly identical for every fly. We’re diving into the mechanics behind this wonder!
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
www.nature.com/articles/s41...
Work by: Simon Hadjaje, Ignacio Andrade-Silva, Marie-Julie Dalbe and Raphaël Clément
December 11, 2024 at 2:00 PM
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
www.nature.com/articles/s41...
Work by: Simon Hadjaje, Ignacio Andrade-Silva, Marie-Julie Dalbe and Raphaël Clément
On a smaller scale, the plates are made of cells covered by wrinkled cuticle. Deployment is a two-scale process: macroscopic origami unfolds, while cells stretch and the cuticle unwrinkles
December 11, 2024 at 1:54 PM
On a smaller scale, the plates are made of cells covered by wrinkled cuticle. Deployment is a two-scale process: macroscopic origami unfolds, while cells stretch and the cuticle unwrinkles
Microtomography shows the wing is made of two thin plates supported by pillars, inflating like an air mattress. Unlike man-made structures the wing surface stretches as it unfolds
December 11, 2024 at 1:54 PM
Microtomography shows the wing is made of two thin plates supported by pillars, inflating like an air mattress. Unlike man-made structures the wing surface stretches as it unfolds
Using fluorescent tracers, we track blood flow in the wing. Unlike adults, where it stays in the veins, the blood spreads through the entire wing
December 11, 2024 at 1:54 PM
Using fluorescent tracers, we track blood flow in the wing. Unlike adults, where it stays in the veins, the blood spreads through the entire wing
The insect boosts its blood pressure by gulping air to inflate its gut like a balloon 🎈and squeezing its abdominal muscles
December 11, 2024 at 1:54 PM
The insect boosts its blood pressure by gulping air to inflate its gut like a balloon 🎈and squeezing its abdominal muscles
This happens thanks to a rapid increase in the insect’s blood pressure. We measured it: the pressure builds up, reaches a plateau, and the wings deploy!
December 11, 2024 at 1:54 PM
This happens thanks to a rapid increase in the insect’s blood pressure. We measured it: the pressure builds up, reaches a plateau, and the wings deploy!
In their final transformation, insects break out of their chrysalises and unfold their origami-like wings into rigid, flight-ready surfaces. This process is nearly identical for every fly. We’re diving into the mechanics behind this wonder!
December 11, 2024 at 1:54 PM
In their final transformation, insects break out of their chrysalises and unfold their origami-like wings into rigid, flight-ready surfaces. This process is nearly identical for every fly. We’re diving into the mechanics behind this wonder!