118 citations · 893 across the 39 of their papers we have counts for
20 papers · 1 filter
Active spheres induce Marangoni flows that drive collective dynamics
Martin Wittmann, Mihail N. Popescu, Alvaro Domínguez +1
For monolayers of chemically active particles at a fluid interface, collective dynamics are predicted to arise owing to activity-induced Marangoni flow even if the particles are no…
Self-motility of an active particle induced by correlations in the surrounding solution
Alvaro Domínguez, M. N. Popescu, C. M. Rohwer +1
Current models of phoretic transport rely on molecular forces creating a "diffuse" particle-fluid interface. We investigate theoretically an alternative mechanism, in which a diffu…
Phase coexistence in a monolayer of active particles induced by Marangoni flows
Alvaro Domínguez, Mihail N. Popescu
Thermally or chemically active colloids generate thermodynamic gradients in the solution in which they are immersed and thereby induce hydrodynamic flows that affect their dynamica…
Theory of anomalous collective diffusion in colloidal monolayers on a spherical interface
Alvaro Domínguez
A planar colloidal monolayer exhibits anomalous collective diffusion due to the hydrodynamic interactions. We investigate how this behavior is affected by the curvature of the mono…
Onset of anomalous diffusion in colloids confined to quasi-monolayers
Johannes Bleibel, Alvaro Domínguez, Martin Oettel
It has been recently shown that a colloidal monolayer, e.g., formed at a fluid interface or by means of a suitable confining potential, exhibits anomalous collective diffusion. Thi…
Collective dynamics of chemically active particles trapped at a fluid interface
Alvaro Domínguez, P. Malgaretti, M. N. Popescu +1
Chemically active colloids generate changes in the chemical composition of their surrounding solution and thereby induce flows in the ambient fluid which affect their dynamical evo…
Effective interaction between active colloids and fluid interfaces induced by Marangoni flows
Alvaro Domínguez, Paolo Malgaretti, Mihail N. Popescu +1
We show theoretically that near a fluid-fluid interface a single active colloidal particle generating, e.g., chemicals or a temperature gradient experiences an effective force of h…
Signature of the time-dependent hydrodynamic interactions on the collective diffusion in colloidal monolayers
Alvaro Domínguez
It has been shown recently that the coefficient of collective diffusion in a colloidal monolayer is divergent due to the hydrodynamic interactions mediated by the ambient fluid in…
Capillary attraction induced collapse of colloidal monolayers at fluid interfaces
J. Bleibel, A. Dominguez, M. Oettel +1
We investigate the evolution of a system of colloidal particles, trapped at a fluid interface and interacting via capillary attraction, as function of the range of the capillary in…
Hydrodynamic interactions induce anomalous diffusion under partial confinement
J. Bleibel, A. Dominguez, F. Günther +2
Under partial confinement, the motion of colloidal particles is restricted to a plane but their dynamics is influenced by hydrodynamic interactions mediated by the unconfined, thre…
Collective dynamics of colloids at fluid interfaces
J. Bleibel, A. Dominguez, M. Oettel +1
The evolution of an initially prepared distribution of micron sized colloidal particles, trapped at a fluid interface and under the action of their mutual capillary attraction, is…
Shock waves in capillary collapse of colloids: a model system for two--dimensional screened Newtonian gravity
J. Bleibel, S. Dietrich, A. Dominguez +1
Using Brownian dynamics simulations, density functional theory, and analytical perturbation theory we study the collapse of a patch of interfacially trapped, micrometer-sized collo…
Dynamics of colloidal particles with capillary interactions
Alvaro Dominguez, Martin Oettel, S. Dietrich
We investigate the dynamics of colloids at a fluid interface driven by attractive capillary interactions. At submillimeter length scales, the capillary attraction is formally analo…
Effective interactions of colloids on nematic films
M. Oettel, A. Dominguez, M. Tasinkevych +1
The elastic and capillary interactions between a pair of colloidal particles trapped on top of a nematic film are studied theoretically for large separations . The elastic inter…
A dynamic density functional theory for particles in a flowing solvent
Markus Rauscher, Alvaro Dominguez, Matthias Krueger +1
We present a dynamic density functional theory (dDFT) which takes into accou nt the advection of the particles by a flowing solvent. For potential flows we can use the same closure…
Theory of capillary-induced interactions beyond the superposition approximation
Alvaro Dominguez, Martin Oettel, Siegfried Dietrich
Within a general theoretical framework we study the effective, deformation-induced interaction between two colloidal particles trapped at a fluid interface in the regime of small d…
Force balance of particles trapped at fluid interfaces
Alvaro Dominguez, Martin Oettel, Siegfried Dietrich
We study the effective forces acting between colloidal particles trapped at a fluid interface which itself is exposed to a pressure field. To this end we apply what we call the ``f…
Capillary-induced interactions between colloids at an interface
Alvaro Dominguez, Martin Oettel, Siegfried Dietrich
Within a general framework we study the effective, deformation-induced interaction between two colloids trapped at a fluid interface. As an application, we consider the interface d…
Effective capillary interaction of spherical particles at fluid interfaces
M. Oettel, A. Dominguez, S. Dietrich
We present a detailed analysis of the effective force between two smooth spherical colloids floating at a fluid interface due to deformations of the interface. The results hold in…
Wall adsorption of a colloidal particle moving in a quiescent partially wetting fluid
Alvaro Dominguez, Siegfried Dietrich
In thermal equilibrium, a colloidal particle between two parallel plates immersed in a fluid which partially wets both the particle and the plates, is attracted by the walls. Howev…