241 citations · 751 across the 21 of their papers we have counts for
15 papers · 1 filter
Chemically active droplets in crowded environments
Jacques Fries, Roxanne Berthin, Chengjie Luo +4
Biomolecular condensates are essential for cellular organization and result from phase separation in systems far from thermodynamic equilibrium. Among various models, chemically ac…
Control of encounter kinetics by chemically active droplets
Jacques Fries, Roxanne Berthin, Marie Jardat +2
Biomolecular condensates play a crucial role in the spatial organization of living matter. These membrane-less organelles, resulting from liquid-liquid phase separation, operate fa…
Active droplets controlled by enzymatic reactions
Jacques Fries, Javier Diaz, Marie Jardat +3
The formation of condensates is now considered as a major organization principle of eukaryotic cells. Several studies have recently shown that the properties of these condensates a…
Microscopic and stochastic simulations of chemically active droplets
Roxanne Berthin, Jacques Fries, Marie Jardat +2
Biomolecular condensates play a central role in the spatial organization of living matter. Their formation is now well understood as a form of liquid-liquid phase separation that o…
Chemotactic particles as strong electrolytes: Debye-Hückel approximation and effective mobility law
Pierre Illien, Ramin Golestanian
We consider a binary mixture of chemically active particles, that produce or consume solute molecules, and that interact with each other through the long-range concentrations field…
Isotropic active colloids: explicit vs. implicit descriptions of propulsion mechanisms
Jeanne Decayeux, Jacques Fries, Vincent Dahirel +2
Modeling the couplings between active particles often neglects the possible many-body effects that control the propulsion mechanism. Accounting for such effects requires the explic…
Enhanced diffusion of tracer particles in nonreciprocal mixtures
Anthony Benois, Marie Jardat, Vincent Dahirel +4
We study the diffusivity of a tagged particle in a binary mixture of Brownian particles with non-reciprocal interactions. Numerical simulations reveal that, for a broad class of in…
On analytical theories for conductivity and self-diffusion in concentrated electrolytes
Olivier Bernard, Marie Jardat, Benjamin Rotenberg +1
Describing analytically the transport properties of electrolytes, such as their conductivity or the self-diffusion of the ions, has been a central challenge of chemical physics for…
Conditions for the propulsion of a colloid surrounded by a mesoscale phase separation
Jeanne Decayeux, Marie Jardat, Pierre Illien +1
We study a two-dimensional model of an active isotropic colloid whose propulsion is linked to the interactions between solute particles of the bath. The colloid catalyzes a chemica…
Diffusion of a tracer in a dense mixture of soft particles connected to different thermostats
Marie Jardat, Vincent Dahirel, Pierre Illien
We study the dynamics of a tracer in a dense mixture of particles connected to different thermostats. Starting from the overdamped Langevin equations that describe the evolution of…
'Fuelled' motion: phoretic motility and collective behaviour of active colloids
Pierre Illien, Ramin Golestanian, Ayusman Sen
Designing microscopic and nanoscopic self-propelled particles and characterising their motion has become a major scientific challenge over the past decades. To this purpose, phoret…
Spontaneous propulsion of an isotropic colloid in a phase-separating environment
Jeanne Decayeux, Vincent Dahirel, Marie Jardat +1
The motion of active colloids is generally achieved through their anisotropy, as exemplified by Janus colloids. Recently, there was a growing interest in the propulsion of isotropi…
Experimental Observation of Flow Fields Around Active Janus Spheres
Andrew I. Campbell, Stephen J. Ebbens, Pierre Illien +1
The hydrodynamic flow field around a catalytically active colloid is probed using particle tracking velocimetry both in the freely swimming state and when kept stationary with an e…
Fluctuation-induced hydrodynamic coupling in an asymmetric, anisotropic dumbbell
Tunrayo Adeleke-Larodo, Pierre Illien, Ramin Golestanian
We recently introduced a model of an asymmetric dumbbell made of two hydrodynamically coupled subunits as a minimal model for a macromolecular complex, in order to explain the obse…
Diffusion of an Enzyme: the Role of Fluctuation-Induced Hydrodynamic Coupling
Pierre Illien, Tunrayo Adeleke-Larodo, Ramin Golestanian
The effect of conformational fluctuations of modular macromolecules, such as enzymes, on their diffusion properties is addressed using a simple generic model of an asymmetric dumbb…