Dans ce manuscrit, je présente différents problèmes faisant intervenir des interfaces déformables. Ces interfaces peuvent être liquides (gouttes, jets, bulles) mais aussi solides (membrane, contact entre grains élastiques). Je présente d'abord le cadre des problèmes abordés depuis la fin de ma thèse, puis je me concentrerai sur quelques...
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December 16, 2011 (v1)PublicationUploaded on: December 4, 2022
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December 16, 2011 (v1)Publication
Dans ce manuscrit, je présente différents problèmes faisant intervenir des interfaces déformables. Ces interfaces peuvent être liquides (gouttes, jets, bulles) mais aussi solides (membrane, contact entre grains élastiques). Je présente d'abord le cadre des problèmes abordés depuis la fin de ma thèse, puis je me concentrerai sur quelques...
Uploaded on: October 11, 2023 -
August 27, 2012 (v1)Journal article
As recently studied, a sub-millimetric liquid jet can bounce on sufficiently hydrophobic surfaces [F.Celestini et al., Soft Matter 6(23), 5872-5876 (2010); A. Kibar et al., Exp. Fluids 49(5), 1135-1145 (2010)]. As the hydrophobicity is reduced, the reflection angle (\theta_r) increases and the jet rebound deviates more and more from specular...
Uploaded on: December 3, 2022 -
February 27, 2012 (v1)Conference paper
International audience
Uploaded on: February 28, 2023 -
June 8, 2014 (v1)Conference paper
International audience
Uploaded on: February 28, 2023 -
August 29, 2012 (v1)Publication
La cavitation est la formation de bulles de vapeur dans un milieu liquide initialement homogène sous tension. Nous étudions la propagation de la cavitation dans des réseaux de cavités d'eau à base d'hydrogel. L'eau est ici amenée en dépression par la déshydratation de l'hydrogel et de façon quasi-statique, contrairement au cas des...
Uploaded on: December 3, 2022 -
September 1, 2009 (v1)Journal article
Most basidiomycete fungi actively eject their spores. The process begins with the condensation of a water droplet at the base of the spore. The fusion of the droplet onto the spore creates a momentum that propels the spore forward. The use of surface tension for spore ejection offers a new paradigm to perform work at small length scales....
Uploaded on: December 3, 2022 -
July 13, 2009 (v1)Conference paper
By means of photoelasticity, we success in visualizing in real time the propagation of acoustic waves in a granular packing of cylinders. As previously mentioned by Nesterenko for the case of spherical grains, the nonlinearity of the contact law between grains induces a dependence of the wave velocity both on its amplitude and on the...
Uploaded on: December 4, 2022 -
August 29, 2012 (v1)Publication
La cavitation est la formation de bulles de vapeur dans un milieu liquide initialement homogène sous tension. Nous étudions la propagation de la cavitation dans des réseaux de cavités d'eau à base d'hydrogel. L'eau est ici amenée en dépression par la déshydratation de l'hydrogel et de façon quasi-statique, contrairement au cas des...
Uploaded on: October 11, 2023 -
March 25, 2019 (v1)Conference paper
National audience
Uploaded on: December 4, 2022 -
May 15, 2009 (v1)Journal article
We study the motion of a drop lying on a plate simultaneously submitted to horizontal and vertical harmonic vibrations. The two driving vibrations are adjusted to the same frequency, and according to their relative amplitude and phase difference ∆Φ, the drop experiences a controlled directed motion with a tunable velocity. We present a simple...
Uploaded on: December 3, 2022 -
February 27, 2012 (v1)Conference paper
By means of photoelasticity, we success in visualizing in real time the propagation of acoustic waves in a granular packing of cylinders. Our experimental procedure allows an access to the local state of stress of individual grains as a function of time with a good accuracy. We first present results on 1d chains of cylinders that are...
Uploaded on: December 4, 2022 -
January 9, 2023 (v1)Journal article
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Uploaded on: November 30, 2023 -
February 27, 2012 (v1)Conference paper
By means of photoelasticity, we success in visualizing in real time the propagation of acoustic waves in a granular packing of cylinders. Our experimental procedure allows an access to the local state of stress of individual grains as a function of time with a good accuracy. We first present results on 1d chains of cylinders that are...
Uploaded on: October 11, 2023 -
February 7, 2023 (v1)Conference paper
National audience
Uploaded on: March 25, 2023 -
July 18, 2011 (v1)Journal article
By means of a photoelastic method, we access the visualization of acoustic waves propagating in a one dimensional array of noncohesive cylinders. As pointed by Nesterenko in the case of spherical grains (V.F. Nesterenko, J. Appl. Mech. Tech. Phys. 24, p. 567 (1983)), the nonlinearity of the contact law between the grains induces a dependence of...
Uploaded on: December 4, 2022 -
July 2, 2010 (v1)Journal article
We investigate the dynamics of a ball bouncing on a vibrated elastic membrane. Beyond the classical solid/solid case, we study the effect of introducing new degrees of freedom by allowing substrate oscillations. The forcing frequency of the vibration strongly influences the different thresholds between the dynamical states. The simple model...
Uploaded on: December 4, 2022 -
December 1, 2020 (v1)Journal article
We investigate the nucleation of cavitation bubbles in a conned Lennard-Jones uid submitted to negative pressures in a cubic enclosure. We perform molecular dynamics (MD) simulations with tunable interatomic potentials that enable to control the wettability of the solid walls by the liquid, i.e its contact angle. For a given temperature and...
Uploaded on: December 4, 2022 -
2010 (v1)Journal article
When a water jet impinges upon a solid surface it produces a so called hydraulic jump that everyone can observe in the sink of its kitchen. It is characterized by a thin liquid sheet bounded by a circular rise of the surface due to capillary and gravitational forces. In this phenomenon, the impact induces a geometrical transition, from the...
Uploaded on: December 4, 2022 -
2016 (v1)Journal article
Plants move, and not only under the action of the wind or during growth. Although they lack muscle, some have developed mechanisms to generate surprisingly fast movements, with speeds (about 10 m/s) and accelerations (thousands of g) that compete and even surpass those encountered in the animal kingdom.
Uploaded on: February 28, 2023 -
July 2014 (v1)Journal article
Dépourvues de muscles, certaines plantes mettent en œuvre des mouvements dont la fulgurance est comparable à celle des animaux. Nous montrons dans cet article que beaucoup de ces mouvements, nécessités par la reproduction ou la nutrition, ont la même base physique : une instabilité mécanique qui libère de l'énergie élastique stockée. Deux...
Uploaded on: February 28, 2023 -
June 9, 2013 (v1)Conference paper
International audience
Uploaded on: February 28, 2023 -
June 2014 (v1)Journal article
International audience
Uploaded on: February 28, 2023