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12 papers · 2 filters
Local viscoelasticity of living cells measured by rotational magnetic spectroscopy
J. -F. Berret
When submitted to a magnetic field, micron size wires with superparamagnetic properties behave as embedded rheometers and represent interesting sensors for micro-rheology. Here we…
Homogeneous deposition of particles by absorption on hydrogels
François Boulogne, François Ingremeau, Julien Dervaux +2
When a drop containing colloidal particles evaporates on a surface, a circular stain made of these particles is often observed due to an internal flow toward the contact line. To h…
Relaxation dynamics of two-component fluid bilayer membranes
Ryuichi Okamoto, Yuichi Kanemori, Shigeyuki Komura +1
We theoretically investigate the relaxation dynamics of a nearly-flat binary lipid bilayer membrane by taking into account the membrane tension, hydrodynamics of the surrounding fl…
Time reversal sub-wavelength focusing in bubbly media
Maxime Lanoy, Romain Pierrat, Fabrice Lemoult +3
Thanks to a Multiple Scattering Theory algorithm, we present a way to focus energy at the deep subwavelength scale, from the far-field, inside a cubic disordered bubble cloud by us…
Manipulating bubbles with secondary Bjerknes forces
Maxime Lanoy, Caroline Derec, Arnaud Tourin +1
Gas bubbles in a sound field are submitted to a radiative force, known as the secondary Bjerknes force. We propose an original experimental setup that allows us to investigate in d…
Modeling the dynamics of a tracer particle in an elastic active gel
E. Ben Isaac, É. Fodor, P. Visco +2
The internal dynamics of active gels, both in artificial (in-vitro) model systems and inside the cytoskeleton of living cells, has been extensively studied by experiments of recent…