Self-propelled rods: Insights and perspectives for active matter

M Bär, R Großmann, S Heidenreich… - Annual Review of …, 2020 - annualreviews.org
A wide range of experimental systems including gliding, swarming and swimming bacteria,
in vitro motility assays, and shaken granular media are commonly described as self …

Exploiting compositional disorder in collectives of light-driven circle walkers

F Siebers, A Jayaram, P Blümler, T Speck - Science Advances, 2023 - science.org
Emergent behavior in collectives of “robotic” units with limited capabilities that is robust and
programmable is a promising route to perform tasks on the micro and nanoscale that are …

Topology of orientational defects in confined smectic liquid crystals

PA Monderkamp, R Wittmann, LBG Cortes… - Physical Review Letters, 2021 - APS
We propose a general formalism to characterize orientational frustration of smectic liquid
crystals in confinement by interpreting the emerging networks of grain boundaries as objects …

Particle-resolved topological defects of smectic colloidal liquid crystals in extreme confinement

R Wittmann, LBG Cortes, H Löwen… - Nature …, 2021 - nature.com
Confined samples of liquid crystals are characterized by a variety of topological defects and
can be exposed to external constraints such as extreme confinements with nontrivial …

Collective dynamics and pair-distribution function of active Brownian ellipsoids in two spatial dimensions

S Bröker, M te Vrugt, R Wittkowski - Communications Physics, 2024 - nature.com
While the collective dynamics of spherical active Brownian particles is relatively well
understood by now, the much more complex dynamics of nonspherical active particles still …

Emergent collective dynamics of pusher and puller squirmer rods: swarming, clustering, and turbulence

AW Zantop, H Stark - Soft Matter, 2022 - pubs.rsc.org
We study the interplay of steric and hydrodynamic interactions in suspensions of elongated
microswimmers by simulating the full hydrodynamics of squirmer rods in the quasi two …

Squirmer rods as elongated microswimmers: flow fields and confinement

AW Zantop, H Stark - Soft Matter, 2020 - pubs.rsc.org
Microswimmers or active elements, such as bacteria and active filaments, have an
elongated shape, which determines their individual and collective dynamics. There is still a …

From scalar to polar active matter: Connecting simulations with mean-field theory

A Jayaram, A Fischer, T Speck - Physical Review E, 2020 - APS
We study numerically the phase behavior of self-propelled elliptical particles interacting
through the “hard” repulsive Gay-Berne potential at infinite Péclet number. Changing a …

[HTML][HTML] Multi-particle collision dynamics with a non-ideal equation of state. II. Collective dynamics of elongated squirmer rods

AW Zantop, H Stark - The Journal of Chemical Physics, 2021 - pubs.aip.org
Simulations of flow fields around microscopic objects typically require methods that both
solve the Navier–Stokes equations and also include thermal fluctuations. One such method …

Machine Learning Assisted Monte Carlo Simulation: Efficient Overlap Determination for Nonspherical Hard Bodies

S Bag, A Jha, F Müller‐Plathe - Advanced Theory and …, 2023 - Wiley Online Library
Standard molecular dynamics (MD) and Monte Carlo (MC) simulations deal with spherical
particles. Extending the standard simulation methodologies to the nonspherical objects is …