101 citations · 300 across the 13 of their papers we have counts for
14 papers
Orientational frustration drives enhanced diffusion of anisotropic particles in a liquid labyrinth
Rohit Mangalwedhekar, Limeng Ruan, Somen Nandi +5
Transport of nanoscale objects in complex, structured environments plays a key role in a wide range of processes, from biomolecular dynamics in extracellular spaces to transport in…
Probing and modeling cell-cell communication in 2D biomimetic tissues
Cécile Marie Vincent, Sapna Ravindran, Alexis Michel Prevost +3
In tissues, cells in direct physical contact with each other can exchange ions or molecules via protein clusters called gap junctions that form channels across the membranes of adj…
Design and optimization of in situ self-functionalizing stress sensors
Olga Vasiljevic, Nicolas Harmand, Antoine Hubert +7
Mechanical contributions are crucial regulators of diverse biological processes, yet their \textit{in vivo} measurement remains challenging due to limitations of current techniques…
Adhesion differentials control the rheology of biomimetic emulsions
Quentin Guigue, Marc Besse, Raphael Voituriez +4
Animal morphogenesis involves complex tissue deformation processes, which require tight control over tissue rheology. Yet, it remains insufficiently understood how tissue rheology…
How to make and trap a pseudo-vesicle with a micropipette
Pierre Tapie, Alexis M. Prevost, Lorraine Montel +2
We present a simple method to produce giant lipid pseudo-vesicles (vesicles with an oily cap on the top), trapped in an agarose gel. The method can be implemented using only a regu…
Adhesion as a trigger of droplet polarization in flowing emulsions
Iaroslava Golovkova, Lorraine Montel, Franck Pan +4
Tissues are subjected to large external forces and undergo global deformations during morphogenesis. We use synthetic analogues of tissues to study the impact of cell-cell adhesion…
A bending fluctuation-based mechanism for particle detection by ciliated structures
Jean-Baptiste Thomazo, Benjamin Le Révérend, Léa-Laetitia Pontani +2
To mimic the mechanical response of passive biological cilia in complex fluids, we study the bending dynamics of an anchored elastic fiber submitted to a dilute granular suspension…
Diffusion through nanopores in connected lipid bilayer networks
Manon Valet, Léa-Laetitia Pontani, Raphaël Voituriez +2
A biomimetic model of cell-cell communication was developed to probe the passive molecular transport across ion channels inserted in synthetic lipid bilayers formed between contact…
Quasi-static microdroplet production in a capillary trap
M. Valet, L. -L. Pontani, A. M. Prevost +1
We have developed a method to produce aqueous microdroplets in an oil phase, based on the periodic extraction of a pending droplet across the oil/air interface. This interface form…
Evidence for marginal stability in emulsions
Jie Lin, Ivane Jorjadze, Lea-Laetitia Pontani +2
We report the first measurements of the effect of pressure on vibrational modes in emulsions, which serve as a model for soft frictionless spheres at zero temperature. As a functio…
Specificity, flexibility and valence of DNA bonds guide emulsion architecture
Lang Feng, Lea-Laetitia Pontani, Remi Dreyfus +2
The specificity and thermal reversibility of DNA interactions have enabled the self-assembly of crystal structures, self-replicating materials and colloidal molecules. Grafting DNA…
A microscopic approach to the nonlinear elasticity of compressed emulsions
Ivane Jorjadze, Lea-Laetitia Pontani, Jasna Brujic
Using confocal microscopy, we measure the packing geometry and interdroplet forces as a function of the osmotic pressure in a 3D emulsion system. We find that the nonlinear elastic…
Biomimetic emulsions reveal the effect of homeostatic pressure on cell-cell adhesion
Lea-Laetitia Pontani, Ivane Jorjadze, Virgile Viasnoff +1
Cell-cell contacts in tissues are continuously subject to mechanical forces due to homeostatic pressure and active cytoskeleton dynamics. While much is known about the molecular pa…
Jamming phase diagram of athermal emulsions with short-range attraction
Ivane Jorjadze, Lea-Laetitia Pontani, Katherine Newhall +1
Using confocal microscopy we investigate the effect of attraction on the packing of polydisperse emulsions under gravity. We find that the distributions of neighbors, coordination…