Oscillatory surface rheotaxis of swimming E. coli bacteria

AJTM Mathijssen, N Figueroa-Morales, G Junot… - Nature …, 2019 - nature.com
Bacterial contamination of biological channels, catheters or water resources is a major threat
to public health, which can be amplified by the ability of bacteria to swim upstream. The …

[HTML][HTML] Which interactions dominate in active colloids?

B Liebchen, H Löwen - The Journal of chemical physics, 2019 - pubs.aip.org
Despite mounting evidence that the same gradients, which active colloids use for swimming,
induce important cross-interactions (phoretic interactions), they are still ignored in most …

Collective motion in a sheet of microswimmers

D Bárdfalvy, V Škultéty, C Nardini, A Morozov… - Communications …, 2024 - nature.com
Self-propelled particles such as bacteria or algae swimming through a fluid are non-
equilibrium systems where particle motility breaks microscopic detailed balance, often …

Hydrodynamics of an odd active surfer in a chiral fluid

Y Hosaka, R Golestanian… - New Journal of …, 2023 - iopscience.iop.org
We theoretically and computationally study the low-Reynolds-number hydrodynamics of a
linear active microswimmer surfing on a compressible thin fluid layer characterized by an …

Optimal swimmers can be pullers, pushers or neutral depending on the shape

A Daddi-Moussa-Ider, B Nasouri, A Vilfan… - Journal of Fluid …, 2021 - cambridge.org
The ability of microswimmers to deploy optimal propulsion strategies is of paramount
importance for their locomotory performance and survival at low Reynolds numbers …

Nutrient transport driven by microbial active carpets

AJTM Mathijssen, F Guzmán-Lastra, A Kaiser… - Physical Review Letters, 2018 - APS
We demonstrate that active carpets of bacteria or self-propelled colloids generate coherent
flows towards the substrate, and propose that these currents provide efficient pathways to …

Swimming trajectories of a three-sphere microswimmer near a wall

A Daddi-Moussa-Ider, M Lisicki, C Hoell… - The Journal of chemical …, 2018 - pubs.aip.org
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 …

Hydrodynamics of a disk in a thin film of weakly nematic fluid subject to linear friction

A Daddi-Moussa-Ider, E Tjhung, T Richter… - Journal of Physics …, 2024 - iopscience.iop.org
To make progress towards the development of a theory on the motion of inclusions in thin
structured films and membranes, we here consider as an initial step a circular disk in a two …

Hydrodynamics of active particles confined in a periodically tapered channel

A Dhar, PS Burada, GP Sekhar - Physics of Fluids, 2020 - pubs.aip.org
Active particles in diverse circumstances encounter confined channels with asymmetric
bounding walls. In the present work, employing the squirmer model, we analyze the …

Dynamics of a simple model microswimmer in an anisotropic fluid: Implications for alignment behavior and active transport in a nematic liquid crystal

A Daddi-Moussa-Ider, AM Menzel - Physical Review Fluids, 2018 - APS
Several recent experiments investigate the orientational and transport behavior of self-
driven bacteria and colloidal particles in nematic liquid crystals. Correspondingly, we study …