Results 131 to 140 of about 1,413 (213)
Anomalous rheology of puller-type microswimmer suspensions
Physical Review ResearchWe explore the mechanism underlying the anomalous rheology of puller-type microswimmer suspensions through direct hydrodynamic simulations. Puller-type swimmers generate contractile flow fields along their swimming direction, leading to hydrodynamic ...
Haruki Hayano, Akira Furukawa
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Microswimmer navigation in external fields [PDF]
We characterize the behaviour of the green alga Chlamydomonas reinhardtii and ram sperm when they navigate through sharp viscosity gradients, showing that the swimming gait plays a key role in determining how a microswimmer is affected when crossing the ...
Coppola, Simone
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Photofocusing: Light and flow of phototactic microswimmer suspension
, 2016 International audienceWe explore in this paper the phenomenon of photofocusing: a coupling between flow vorticity and biased swimming of microalgae toward a light source that produces a focusing of the microswimmer suspension. We combine experiments that
Martin, Matthieu +4 more
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Hyper-Ballistic Superdiffusion of Competing Microswimmers
EntropyHyper-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.
Kristian Stølevik Olsen +2 more
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Anomalous Long-Ranged Influence of an Inclusion in Momentum-Conserving Active Fluids
Physical Review XWe show that an inclusion placed inside a dilute Stokesian suspension of microswimmers induces power-law number-density modulations and flows. These take a different form depending on whether the inclusion is held fixed by an external force—for example ...
Thibaut Arnoulx de Pirey +2 more
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Approximating microswimmer dynamics by active Brownian motion: energetics and efficiency
, 2019 We consider the dynamics of a microswimmer and show that they can be approximated by active Brownian motion. The swimmer is modeled by coupled overdamped Langevin equations with periodic driving.
Kahlen, Marcel Sebastian +1 more
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Viscosity estimation from elastohydrodynamic response of a magnetic flagellated microswimmer
Reliable viscosity measurement at small length scales is essential for a wide range of applications, from microfluidics to biomedical systems.
Chennaram, T. Sonamani Singh, Sharanya S
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Physical mechanism of self-propulsion of ferromagnetic microswimmer and its numerical simulation
, 2009 Darbā tiek aplūkots feromagnētisks mikropeldētājs, kura dinamika mainīgā magnētiskā laukā tiek pētīta izmantojot modificētu Kirhofa modeli elastīgam stienim.
Livanovičs, Rūdolfs
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Simulation of collective phenomena in microswimmer suspensions [Elektronisk resurs]
, 2020 Collective motion is ubiquitous in biological and synthetic systems across many length- and timescales. On the macroscopic scale, examples include schools of fish, herds of sheep and flocks of birds.
Lund University., Bardfalvy, Dora,
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Programmable hydrodynamics of active particles. [PDF]
Nat CommunRohde L +3 more
europepmc +1 more source