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80 papers
Reconfiguration, Interrupted Aging and Enhanced Dynamics of a Colloidal Gel using Photo-Switchable Active Doping
Mengshi Wei, Matan Ben Zion, Olivier Dauchot
We study light-activated quasi-2d gels made of a colloidal network doped with Janus particles. Following the gel formation, the internal dynamics of the gel are monitored before, d…
Polymer-Chain Configurations in Active and Passive Baths
Caleb J. Anderson, Guillaume Briand, Olivier Dauchot +1
The configurations taken by polymers embedded in out-of-equilibrium baths may have broad effects in a variety of biological systems. As such, they have attracted considerable inter…
Collective Motion in Active Materials: Model Experiments
Olivier Dauchot
In these lecture notes from the Les Houches School, we discuss collective motion in model experiments of active systems. We specifically discuss walking grains and colloidal roller…
Transition from granular to Brownian suspension : an inclined plane experiment
Alice Billon, Yoël Forterre, Olivier Pouliquen +1
We experimentally revisite the flow down an inclined plane of dense granular suspensions, with particles of sizes in the micron range, for which thermal fluctuations cannot be igno…
Tension-controlled switch between collective actuations in active solids
Paul Baconnier, Dor Shohat, Olivier Dauchot
The recent finding of collective actuation in active solids, namely solids embedded with active units, opens the path towards multifunctional materials with genuine autonomy. In su…
Linear instability of turbulent channel flow
Pavan V. Kashyap, Yohann Duguet, Olivier Dauchot
Laminar-turbulent pattern formation is a distinctive feature of the intermittency regime in subcritical plane shear flows. By performing extensive numerical simulations of the plan…