Results 101 to 110 of about 1,201 (161)

Anisotropic mesoscale turbulence and pattern formation in microswimmer suspensions induced by orienting external fields

New Journal of Physics, 2019
This paper studies the influence of orienting external fields on pattern formation, particularly mesoscale turbulence, in microswimmer suspensions. To this end, we apply a hydrodynamic theory that can be derived from a microscopic microswimmer model ...
Henning Reinken, Sebastian Heidenreich, Markus Bär, Sabine H L Klapp   +3 more
doaj   +1 more source

Simulation of a model microswimmer

Journal of Physics: Condensed Matter, 2009
We discuss the modelling of a microswimmer that operates in a 'squirmer' mode, by means of stochastic rotation dynamics. The squirmer that we model can easily be tuned between a 'pusher' and a 'puller'. We examine the flows produced by the squirmer and find that there is good agreement between both the predicted and simulated velocities of locomotion ...
Downton, Matthew T, Stark, Holger
openaire   +3 more sources

Hyper-Ballistic Superdiffusion of Competing Microswimmers. [PDF]

Entropy (Basel)
Hyper-ballistic diffusion is shown to arise from a simple model of microswimmers moving through a porous media while competing for resources. By using a mean-field model where swimmers interact through the local concentration, we show that a non-linear Fokker–Planck equation arises.
Olsen KS, Hansen A, Flekkøy EG.
europepmc   +5 more sources

Pattern selection and the route to turbulence in incompressible polar active fluids

New Journal of Physics
Active fluids, such as suspensions of microswimmers, are well known to self-organize into complex spatio-temporal flow patterns. An intriguing example is mesoscale turbulence, a state of dynamic vortex structures exhibiting a characteristic length scale.
Henning Reinken, Sebastian Heidenreich, Markus Bär, Sabine H L Klapp   +3 more
doaj   +1 more source

Trypanosoma brucei moving in microchannels and through constrictions

New Journal of Physics
Trypanosoma brucei ( T. brucei ), a single-celled parasite and natural microswimmer, is responsible for fatal sleeping sickness in infected mammals, including humans. Understanding how T.
Zihan Tan, Julian I U Peters, Holger Stark   +2 more
doaj   +1 more source

Alignment-induced self-organization of autonomously steering microswimmers: Turbulence, clusters, vortices, and jets

Physical Review Research
Microorganisms can sense their environment and adapt their movement accordingly, which gives rise to a multitude of collective phenomena, including active turbulence and bioconvection.
Segun Goh, Elmar Westphal, Roland G. Winkler, Gerhard Gompper   +3 more
doaj   +1 more source

Physical embodiment enables information processing beyond explicit flow sensing in active matter. [PDF]

Sci Adv
Paul D, Milosevic N, Scherf N, Cichos F.
europepmc   +1 more source

Supramolecular Engineering of Melamine-Barbiturate Assemblies for Polyphenol Encapsulation and Antioxidant Delivery. [PDF]

ACS Omega
Bridenko LA, Moskalenko IV, Nishanbaev IZ, Krylov VA, Zhukov MV, Skorb EV.   +5 more
europepmc   +1 more source

Generalized Taylor dispersion of chiral microswimmers. [PDF]

Philos Trans A Math Phys Eng Sci
Ogawa K, Ishimoto K.
europepmc   +1 more source

ZIF-8 Microswimmers Self-Fast Dynamic Destruction in Microliter Volumes of Cerebrospinal Fluid Samples: Toward a Selective Assessment of Amyloidosis. [PDF]

Anal Chem
Bujalance-Fernández J, Carro E, Antequera D, Jurado-Sánchez B, Escarpa A.   +4 more
europepmc   +1 more source