37 citations · 456 across the 40 of their papers we have counts for
19 papers · 1 filter
Margination of artificially stiffened red blood cells
Revaz D. Chachanidze, Othmane Aouane, Jens Harting +2
Margination, a fundamental process in which leukocytes migrate from the flowing blood to the vessel wall, is well-documented in physiology. However, it is still an open question on…
Enhancement of bubble transport in porous electrodes and catalysts
Thomas Scheel, Paolo Malgaretti, Jens Harting
We investigate the formation and transport of gas bubbles across a model porous catalyst/electrode using lattice Boltzmann simulations. This approach enables us to systematically e…
Turning catalytically active pores into active pumps
G. C. Antunes, P. Malgaretti, J. Harting
We develop a semi-analytical model of self-diffusioosmotic transport in active pores, which includes advective transport and the inverse chemical reaction which consumes solute. In…
Suspensions of viscoelastic capsules: effect of membrane viscosity on transient dynamics
Fabio Guglietta, Francesca Pelusi, Marcello Sega +2
Membrane viscosity is known to play a central role in the transient dynamics of isolated viscoelastic capsules by decreasing their deformation, inducing shape oscillations and redu…
Pumping and mixing in active pores
G. C. Antunes, P. Malgaretti, J. Harting +1
We show both numerically and analytically that a chemically patterned active pore can act as a micro/nano-pump for fluids, even if it is fore-aft symmetric. This is possible due to…
Squeezing multiple soft particles into a constriction: transition to clogging
Clément Bielinski, Othmane Aouane, Jens Harting +1
We study numerically how multiple deformable capsules squeeze into a constriction. This situation is largely encountered in microfluidic chips designed to manipulate living cells,…
Two-dimensional Cahn-Hilliard simulations for coarsening kinetics of spinodal decomposition in binary mixtures
Björn König, Olivier J. J. Ronsin, Jens Harting
The evolution of the microstructure due to spinodal decomposition in phase separated mixtures has a strong impact on the final material properties. In the late stage of coarsening,…
Transport of neutral and charged nanorods across varying-section channels
Paolo Malgaretti, Jens Harting
We study the dynamics of neutral and charged rods embedded in varying-section channels. By means of systematic approximations, we derive the dependence of the local diffusion coeff…
Regimes of motion of magnetocapillary swimmers
Alexander Sukhov, Maxime Hubert, Galien Grosjean +6
The dynamics of a triangular magnetocapillary swimmer is studied using the lattice Boltzmann method. Performing extensive numerical simulations taking into account the coupled dyna…
Capillary-bridge Forces Between Solid Particles: Insights from Lattice Boltzmann Simulations
Lei Yang, Marcello Sega, Jens Harting
Liquid capillary-bridge formation between solid particles has a critical influence on the rheological properties of granular materials and, in particular, on the efficiency of flui…
Equilibrium orientation and adsorption of an ellipsoidal Janus particle at a fluid-fluid interface
Florian Günther, Qingguang Xie, Jens Harting
We investigate the equilibrium orientation and adsorption process of a single, ellipsoidal Janus particle at a fluid-fluid interface. The particle surface comprises equally sized p…
Capillary interactions between soft capsules protruding through thin fluid films
Maarten Wouters, Othmane Aouane, Marcello Sega +1
When a suspension dries, the suspending fluid evaporates, leaving behind a dry film composed of the suspended particles. During the final stages of drying, the height of the fluid…
Desorption energy of soft particles from a fluid interface
Hadi Mehrabian, Jacco H. Snoeijer, Jens Harting
The efficiency of soft particles to stabilize emulsions is examined by measuring their desorption free energy, i.e., the mechanical work required to detach the particle from a flui…
Numerical simulations of self-diffusiophoretic colloids at fluid interfaces
T. Peter, P. Malgaretti, N. Rivas +3
The dynamics of active colloids is very sensitive to the presence of boundaries and interfaces which therefore can be used to control their motion. Here we analyze the dynamics of…
Inertial migration of neutrally-buoyant particles in superhydrophobic channels
Tatiana V. Nizkaya, Evgeny S. Asmolov, Jens Harting +1
At finite Reynolds numbers particles migrate across flow streamlines to their equilibrium positions in microchannels. Such a migration is attributed to an inertial lift force, and…
Capillary assemblies in a rotating magnetic field
Galien Grosjean, Maxime Hubert, Ylona Collard +4
Small objects floating on a fluid have a tendency to aggregate due to capillary forces. This effect has been used, with the help of a magnetic induction field, to assemble submilli…
Optimal motion of triangular magnetocapillary swimmers
Alexander Sukhov, Sebastian Ziegler, Qingguang Xie +7
A system of ferromagnetic particles trapped at a liquid-liquid interface and subjected to a set of magnetic fields (magnetocapillary swimmers) is studied numerically using a hybrid…
How antagonistic salts cause nematic ordering and behave like diblock copolymers
David Jung, Nicolas Rivas, Jens Harting
We present simulation results and an explanatory theory on how antagonistic salts affect the spinodal decomposition of binary fluid mixtures. We find that spinodal decomposition is…
Mesoscopic electrohydrodynamic simulations of binary colloidal suspensions
Nicolas Rivas, Stefan Frijters, Ignacio Pagonabarraga +1
A model is presented for the solution of electrokinetic phenomena of colloidal suspensions in fluid mixtures. We solve the discrete Boltzmann equation with a BGK collision operator…