471 citations · 2.4k across the 19 of their papers we have counts for
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Viscotaxis: microswimmer navigation in viscosity gradients
Benno Liebchen, Paul Monderkamp, Borge ten Hagen +1
The survival of many microorganisms, like \textit{Leptospira} or \textit{Spiroplasma} bacteria, can depend on their ability to navigate towards regions of favorable viscosity. Whil…
Helical paths, gravitaxis, and separation phenomena for mass-anisotropic self-propelling colloids: experiment versus theory
Andrew I. Campbell, Raphael Wittkowski, Borge ten Hagen +2
The self-propulsion mechanism of active colloidal particles often generates not only translational but also rotational motion. For particles with an anisotropic mass density under…
Phototaxis of synthetic microswimmers in optical landscapes
Celia Lozano, Borge ten Hagen, Hartmut Löwen +1
Many microorganisms, with phytoplankton and zooplankton as prominent examples, display phototactic behaviour, that is, the ability to perform directed motion within a light gradien…
Brownian motion of a circle swimmer in a harmonic trap
Soudeh Jahanshahi, Hartmut Löwen, Borge ten Hagen
We study the dynamics of a Brownian circle swimmer with a time-dependent self-propulsion velocity in an external temporally varying harmonic potential. For several situations, the…
Depolarized light scattering from prolate anisotropic particles: the influence of the particle shape on the field autocorrelation function
Christopher Passow, Borge ten Hagen, Hartmut Löwen +1
We provide a theoretical analysis for the intermediate scattering function typically measured in depolarized dynamic light scattering experiments. We calculate the field autocorrel…
How does a flexible chain of active particles swell?
Andreas Kaiser, Sonja Babel, Borge ten Hagen +2
We study the swelling of a flexible linear chain composed of active particles by analytical theory and computer simulation. Three different situations are considered: a free chain,…
Can the self-propulsion of anisotropic microswimmers be described by using forces and torques?
Borge ten Hagen, Raphael Wittkowski, Daisuke Takagi +3
The self-propulsion of artificial and biological microswimmers (i.e., active colloidal particles) has often been modelled by using a force and a torque entering into the overdamped…
Gravitaxis of asymmetric self-propelled colloidal particles
Borge ten Hagen, Felix Kümmel, Raphael Wittkowski +3
Many motile microorganisms adjust their swimming motion relative to the gravitational field and thus counteract sedimentation to the ground. This gravitactic behavior is often the…
Reply to Comment on "Circular Motion of Asymmetric Self-Propelling Particles"
Felix Kümmel, Borge ten Hagen, Raphael Wittkowski +6
In a Comment [Phys. Rev. Lett. 113, 029801 (2014)] on our Letter on self-propelled asymmetric particles [Phys. Rev. Lett. 110, 198302 (2013); arXiv:1302.5787], Felderhof claims tha…
Transport powered by bacterial turbulence
Andreas Kaiser, Anton Peshkov, Andrey Sokolov +3
We demonstrate that collective turbulent-like motion in a bacterial bath can power and steer directed transport of mesoscopic carriers through the suspension. In our experiments an…
Swimming path statistics of an active Brownian particle with time-dependent self-propulsion
Sonja Babel, Borge ten Hagen, Hartmut Löwen
Typically, in the description of active Brownian particles, a constant effective propulsion force is assumed, which is then subjected to fluctuations in orientation and translation…
Two-dimensional colloidal mixtures in magnetic and gravitational fields
Hartmut Löwen, Tobias Horn, Tim Neuhaus +1
This mini-review is concerned with two-dimensional colloidal mixtures exposed to various kinds of external fields. By a magnetic field perpendicular to the plane, dipole moments ar…
Non-Gaussian statistics for the motion of self-propelled Janus particles: experiment versus theory
Xu Zheng, Borge ten Hagen, Andreas Kaiser +4
Spherical Janus particles are one of the most prominent examples for active Brownian objects. Here, we study the diffusiophoretic motion of such microswimmers in experiment and in…
Dynamics of a deformable active particle under shear flow
Mitsusuke Tarama, Andreas M. Menzel, Borge ten Hagen +3
The motion of a deformable active particle in linear shear flow is explored theoretically. Based on symmetry considerations, in two spatial dimensions, we propose coupled nonlinear…
Brownian motion and the hydrodynamic friction tensor for colloidal particles of complex shape
Daniela J. Kraft, Raphael Wittkowski, Borge ten Hagen +3
We synthesize colloidal particles with various anisotropic shapes and track their orientationally resolved Brownian trajectories using confocal microscopy. An analysis of appropria…
Circular motion of asymmetric self-propelling particles
Felix Kümmel, Borge ten Hagen, Raphael Wittkowski +5
Micron-sized self-propelled (active) particles can be considered as model systems for characterizing more complex biological organisms like swimming bacteria or motile cells. We pr…
Brownian dynamics of a self-propelled particle in shear flow
Borge ten Hagen, Raphael Wittkowski, Hartmut Löwen
Brownian dynamics of a self-propelled particle in linear shear flow is studied analytically by solving the Langevin equation and in simulation. The particle has a constant propagat…
Brownian motion of a self-propelled particle
Borge ten Hagen, Sven van Teeffelen, Hartmut Löwen
Overdamped Brownian motion of a self-propelled particle is studied by solving the Langevin equation analytically. On top of translational and rotational diffusion, in the context o…
Non-Gaussian behaviour of a self-propelled particle on a substrate
Borge ten Hagen, Sven van Teeffelen, Hartmut Löwen
The overdamped Brownian motion of a self-propelled particle which is driven by a projected internal force is studied by solving the Langevin equation analytically. The "active" par…