643 citations · 4.8k across the 71 of their papers we have counts for
82 papers
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…
Characterizing elastic turbulence in the three-dimensional von Karman swirling flow using the Oldroyd-B model
Reinier van Buel, Holger Stark
We present the full three-dimensional numerical investigation of the von Karman swirling flow between two parallel plates using the Oldroyd-B model and characterize the onset and d…
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…
On the cross-streamline lift of microswimmers in viscoelastic flows
Akash Choudhary, Holger Stark
The current work studies the dynamics of a microswimmer in pressure-driven flow of a weakly viscoelastic fluid. Employing the second-order fluid model, we show that the self-propel…