64 citations · 903 across the 56 of their papers we have counts for
32 papers · 1 filter
Hydrodynamic flows induced by localized torques (rotlets) in wedge-shaped geometries
Abdallah Daddi-Moussa-Ider, Jakob Mihatsch, Michael J. Mitchell +2
Wedge-shaped geometries in low-Reynolds-number flows are of increasing importance, for instance, in the design of microfluidic devices. The corresponding Green's functions describi…
Asymptotic limits of the axisymmetric solution of the Brinkman equation for a point force near a no-slip wall
Abdallah Daddi-Moussa-Ider, Andrej Vilfan
We derive the far-field and near-field solutions for the Green's function of a point force acting perpendicular to a no-slip wall in a Brinkman fluid, focusing on the regime where…
Analytical solution for the hydrodynamic resistance of a disk in a compressible fluid layer with odd viscosity on a rigid substrate
Abdallah Daddi-Moussa-Ider, Andrej Vilfan, Yuto Hosaka
Chiral active fluids can exhibit odd viscosity, a property that breaks the time-reversal and parity symmetries. Here, we examine the hydrodynamic flows of a rigid disk moving in a…
Hydrodynamic flow field and frictional resistance coefficient of a disk rotating steadily in a compressible fluid layer with odd viscosity on a rigid substrate
Abdallah Daddi-Moussa-Ider, Yuto Hosaka, Elsen Tjhung +1
We analyze the hydrodynamics of a rotating disk in a two-dimensional compressible fluid layer with odd viscosity. Unlike conventional fluids, odd viscosity introduces a radial flow…
On force balance in Brinkman fluids under confinement
Abdallah Daddi-Moussa-Ider, Andrej Vilfan
A point force acting on a Brinkman fluid in confinement is always counterbalanced by the force on the porous medium, the force on the walls and the stress at open boundaries. We di…
Propulsion of a three-sphere micro-robot in a porous medium
Chih-Tang Liao, Andrew Lemus, Ali Gürbüz +3
Microorganisms and synthetic microswimmers often encounter complex environments consisting of networks of obstacles embedded into viscous fluids. Such settings include biological m…
Hydrodynamic efficiency limit on a Marangoni surfer
Abdallah Daddi-Moussa-Ider, Ramin Golestanian, Andrej Vilfan
A Marangoni surfer is an object embedded in a gas-liquid interface, propelled by gradients in surface tension. We derive an analytical theorem for the lower bound on the viscous di…
The effect of axisymmetric confinement on propulsion of a three-sphere microswimmer
Ali Gürbüz, Andrew Lemus, Ebru Demir +2
Swimming at the microscale has recently garnered substantial attention due to the fundamental biological significance of swimming microorganisms and the wide range of biomedical ap…
Steady azimuthal flow field induced by a rotating sphere near a rigid disk or inside a gap between two coaxially positioned rigid disks
Abdallah Daddi-Moussa-Ider, Alexander R. Sprenger, Thomas Richter +2
Geometric confinements play an important role in many physical and biological processes and significantly affect the rheology and behavior of colloidal suspensions at low Reynolds…
Optimal swimmer can be puller, pusher, or neutral depending on the shape
Abdallah Daddi-Moussa-Ider, Babak Nasouri, Andrej Vilfan +1
The ability of microswimmers to deploy optimal propulsion strategies is of paramount importance for their locomotory performance and survival at low Reynolds numbers. Although for…
Hydrodynamics can Determine the Optimal Route for Microswimmer Navigation
Abdallah Daddi-Moussa-Ider, Hartmut Löwen, Benno Liebchen
Contrasting the well explored problem on how to steer a macroscopic agent like an airplane or a moon lander to optimally reach a target, "optimal microswimming", i.e. the quest for…
Asymmetric Stokes flow induced by a transverse point-force acting near a finite-sized elastic membrane
Abdallah Daddi-Moussa-Ider
A deep understanding of the physical interactions between nanoparticles and target cell membranes is important in designing efficient nanocarrier systems for drug delivery applicat…
Towards an analytical description of active microswimmers in clean and in surfactant-covered drops
Alexander R. Sprenger, Vaseem A. Shaik, Arezoo M. Ardekani +6
Geometric confinements are frequently encountered in the biological world and strongly affect the stability, topology, and transport properties of active suspensions in viscous flo…
Dynamics of a microswimmer-microplatelet composite
Abdallah Daddi-Moussa-Ider, Maciej Lisicki, Hartmut Löwen +1
Guiding active microswimmers by external fields to requested target locations is a promising strategy to realize complex transport on the microscale. To this end, one possibility c…
Frequency-dependent higher-order Stokes singularities near a planar elastic boundary: implications for the hydrodynamics of an active microswimmer near an elastic interface
Abdallah Daddi-Moussa-Ider, Christina Kurzthaler, Christian Hoell +6
The emerging field of self-driven active particles in fluid environments has recently created significant interest in the biophysics and bioengineering communities owing to their p…
Creeping motion of a solid particle inside a spherical elastic cavity. II. Asymmetric motion
Christian Hoell, Hartmut Löwen, Andreas M. Menzel +1
An analytical method is proposed for computing the low-Reynolds-number hydrodynamic mobility function of a small colloidal particle asymmetrically moving inside a large spherical e…
Axisymmetric flow due to a Stokeslet near a finite-sized elastic membrane
Abdallah Daddi-Moussa-Ider, Badr Kaoui, Hartmut Löwen
Elastic confinements play an important role in many soft matter systems and affect the transport properties of suspended particles in viscous flow. On the basis of low-Reynolds-num…
Hydrodynamic coupling and rotational mobilities near planar elastic membranes
Abdallah Daddi-Moussa-Ider, Maciej Lisicki, Stephan Gekle +2
We study theoretically and numerically the coupling and rotational hydrodynamic interactions between spherical particles near a planar elastic membrane that exhibits resistance tow…
A reciprocal theorem for the prediction of the normal force induced on a particle translating parallel to an elastic membrane
Abdallah Daddi-Moussa-Ider, Bhargav Rallabandi, Stephan Gekle +1
When an elastic object is dragged through a viscous fluid tangent to a rigid boundary, it experiences a lift force perpendicular to its direction of motion. An analogous lift mecha…
State diagram of a three-sphere microswimmer in a channel
Abdallah Daddi-Moussa-Ider, Maciej Lisicki, Arnold J. T. M. Mathijssen +5
Geometric confinements are frequently encountered in soft matter systems and in particular significantly alter the dynamics of swimming microorganisms in viscous media. Surface-rel…
Creeping motion of a solid particle inside a spherical elastic cavity
Abdallah Daddi-Moussa-Ider, Hartmut Löwen, Stephan Gekle
On the basis of the linear hydrodynamic equations, we present an analytical theory for the low-Reynolds-number motion of a solid particle moving inside a larger spherical elastic c…
Swimming trajectories of a three-sphere microswimmer near a wall
Abdallah Daddi-Moussa-Ider, Maciej Lisicki, Christian Hoell +1
The hydrodynamic flow field generated by self-propelled active particles and swimming microorganisms is strongly altered by the presence of nearby boundaries in a viscous flow. Usi…
Hydrodynamic mobility of a sphere moving on the centerline of an elastic tube
Abdallah Daddi-Moussa-Ider, Maciej Lisicki, Stephan Gekle
Elastic channels are an important component of many soft matter systems, in which hydrodynamic interactions with confining membranes determine the behavior of particles in flow. In…
Slow rotation of a spherical particle inside an elastic tube
Abdallah Daddi-Moussa-Ider, Maciej Lisicki, Stephan Gekle
In this paper, we present an analytical calculation of the rotational mobility functions of a particle rotating on the centerline of an elastic cylindrical tube whose membrane exhi…