Results 11 to 20 of about 30,999 (157)

Deformable self-propelled particles [PDF]

Physical Review Letters, 2008
A theory of self-propelled particles is developed in two dimensions assuming that the particles can be deformed from a circular shape when the propagating velocity is increased. A coupled set of equations in terms of the velocity and a tensor variable to
P. G. de Gennes, T. Killich, Takahiro Ohkuma, Takao Ohta, W. Ebeling   +4 more
core   +3 more sources

Soft deformable self-propelled particles [PDF]

EPL (Europhysics Letters), 2012
In this work we investigate the collective behavior of self-propelled particles that deform due to local pairwise interactions. We demonstrate that this deformation alone can induce alignment of the velocity vectors.
A. M. Menzel, Bertin E., Grossman D., Schmidt M., T. Ohta, Thutupalli S., Wensink H. H. Löwen H.   +6 more
core   +2 more sources

Gravitaxis of asymmetric self-propelled colloidal particles [PDF]

Nature Communications, 2014
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 result of an inhomogeneous mass distribution which aligns the ...
Bechinger, Clemens, Hagen, Borge ten, Kümmel, Felix, Löwen, Hartmut, Takagi, Daisuke, Wittkowski, Raphael   +5 more
core   +8 more sources

Dynamics of Self-Propelled Particles Under Strong Confinement [PDF]

Soft Matter, 2014
We develop a statistical theory for the dynamics of non-aligning, non-interacting self-propelled particles confined in a convex box in two dimensions.
Baskaran, Aparna, Fily, Yaouen, Hagan, Michael F.   +2 more
core   +3 more sources

Self-propelled particles undergoing cyclic transitions

Physical Review Research
Cyclic transitions between active and passive states are central to many natural and synthetic systems, ranging from light-driven active particles to animal migrations.
Ye Zhang, Duanduan Wan
doaj   +3 more sources

Random walks of intermittently self-propelled particles

Physical Review Research
Motivated by various recent experimental findings, we propose a dynamical model of intermittently self-propelled particles: active particles that recurrently switch between two modes of motion, namely an active run state and a turn state, in which self ...
Agniva Datta, Carsten Beta, Robert Großmann   +2 more
doaj   +3 more sources

Self-organization in systems of self-propelled particles [PDF]

Physical Review E, 2000
We investigate a discrete model consisting of self-propelled particles that obey simple interaction rules. We show that this model can self-organize and exhibit coherent localized solutions in one- and in two-dimensions.In one-dimension, the self ...
A. Czirok, A. Mogilner, A. Nicol, A.S. Mikhailov, D. Helbing, E. Ben-Jacob, I. Prigogine, J. Hemmingsson, J. Toner, J. Toner, J.K. Parrish, N. Shimoyama, O.J. O’Loan, T. Vicsek, W.-J. Rappel, Y.L. Duparcmeur   +15 more
core   +3 more sources

Capturing self-propelled particles in a moving microwedge [PDF]

Physical Review E, 2013
Catching fish with a fishing net is typically done either by dragging a fishing net through quiescent water or by placing a stationary basket trap into a stream. We transfer these general concepts to micron-sized self-motile particles moving in a solvent
Kaiser, A., Löwen, H., Popowa, K., Wensink, H. H.   +3 more
core   +3 more sources

Noise-induced vortex reversal of self-propelled particles [PDF]

Physical Review E, 2012
We report an interesting phenomenon of noise-induced vortex reversal in a two-dimensional system of self-propelled particles (SPP) with soft-core interactions.
G. H. Golub, Hanshuang Chen, Zhonghuai Hou   +2 more
core   +3 more sources

Inertial self-propelled particles [PDF]

The Journal of Chemical Physics, 2021
We study how inertia affects the behavior of self-propelled particles moving through a viscous solvent by employing the underdamped version of the active Ornstein–Uhlenbeck model. We consider both potential-free and harmonically confined underdamped active particles and investigate how the single-particle trajectories change as the drag coefficient is ...
Lorenzo Caprini, Umberto Marini Bettolo Marconi   +1 more
openaire   +3 more sources