Phase behaviour and dynamical features of a two-dimensional binary mixture of active/passive spherical particles

DR Rodriguez, F Alarcon, R Martinez, J Ramírez… - Soft Matter, 2020 - pubs.rsc.org
In this work we have characterized the phase behaviour and the dynamics of bidimensional
mixtures of active and passive Brownian particles. We have evaluated state diagrams at …

Flow-induced diffusion in a packed lattice of squirmers

Y Kogure, T Omori, T Ishikawa - Journal of Fluid Mechanics, 2023 - cambridge.org
Mass transport in suspensions of swimming microorganisms is one of the most important
factors for the colonisation and growth of microorganisms. Hydrodynamic interactions …

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 …

[HTML][HTML] Active bath-induced localization and collapse of passive semiflexible polymers

SM Mousavi, G Gompper, RG Winkler - The journal of chemical …, 2021 - pubs.aip.org
The conformational and dynamical properties of a passive polymer embedded in a bath of
active Brownian particles (ABPs) are studied by Langevin dynamics simulations. Various …

Statistics of colloidal suspensions stirred by microswimmers

L Ortlieb, S Rafaï, P Peyla, C Wagner, T John - Physical review letters, 2019 - APS
We present a statistical analysis of the experimental trajectories of colloids in a dilute
suspension of the green algae Chlamydomonas reinhardtii. The measured probability …

Anisotropic diffusion of ellipsoidal tracers in microswimmer suspensions

H Nordanger, A Morozov, J Stenhammar - Physical Review Fluids, 2022 - APS
Tracer particles immersed in suspensions of biological microswimmers such as E. coli or C.
reinhardtii display phenomena unseen in conventional equilibrium systems, including …

Enhanced velocity fluctuations in interacting swimmer suspensions

S Nambiar, P Garg, G Subramanian - Journal of Fluid Mechanics, 2021 - cambridge.org
This paper characterizes the nature of velocity fluctuations in swimmer suspensions by
determining the fluid velocity variance and the diffusivity of immersed passive tracers in …

Enhanced hydrodynamic diffusion in dense binary active suspensions

Z Ge, S Bagheri, GJ Elfring - arXiv preprint arXiv:2311.09448, 2023 - arxiv.org
Active suspensions, fluids loaded with energy-injecting microswimmers such as cells or
microrobots, have potential applications in diverse areas ranging from energy to …

The inhibition of concentrated active baths

C Wang, H Jiang - The Journal of Chemical Physics, 2020 - pubs.aip.org
Passive tracers in the active bath express fascinating behaviors. However, most studies are
restricted to dilute active baths. Here, we use 2D simulation of suspensions consisting of …

Self-propulsion of a sticky sphere partially covered with a surface slip velocity

A Dhar, PS Burada, GP Raja Sekhar - Physics of Fluids, 2019 - pubs.aip.org
Microorganisms follow various strategies to swim in a viscous medium. In an attempt to
understand the swimming of ciliated microorganisms, we study low Reynolds number …