643 citations · 4.8k across the 71 of their papers we have counts for
54 papers · 1 filter
Orientational dynamics and rheology of active suspensions in weakly viscoelastic flows
Akash Choudhary, Sankalp Nambiar, Holger Stark
Microswimmer suspensions in Newtonian fluids exhibit unusual macroscale properties, such as a superfluidic behavior, which can be harnessed to perform work at microscopic scales. S…
Collective motion of active particles exhibiting non-reciprocal orientational interactions
Milos Knezevic, Till Welker, Holger Stark
We present a Brownian dynamics study of a 2d bath of active particles interacting among each other through usual steric interactions and, additionally, via non-reciprocal avoidant…
Szilard engines and information-based work extraction for active systems
P. Malgaretti, H. Stark
The out of equilibrium nature of active systems can be exploited for the design of information-based engines. We design two types of an active Szilard engine that use a Maxwell dae…
Gyrotactic cluster formation of bottom-heavy squirmers
Felix Rühle, Arne W. Zantop, Holger Stark
Squirmers that are bottom-heavy experience a torque that aligns them along the vertical so that they swim upwards. In a suspension of many squirmers, they also interact hydrodynami…
Oscillatory active microrheology of active suspensions
M. Knezevic, L. E. Aviles Podgurski, H. Stark
Using the method of Brownian dynamics, we investigate the dynamic properties of a 2d suspension of active disks at high Péclet numbers using active microrheology. In our simulation…
How inertial lift affects the dynamics of a microswimmer in Poiseuille flow
Akash Choudhary, Subhechchha Paul, Felix Rühle +1
We analyze the dynamics of a microswimmer in pressure-driven Poiseuille flow, where fluid inertia is small but non-negligible. Using perturbation theory and the reciprocal theorem,…