Gerhard Gompper
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View article: Tunable colloidal swarmalators with hydrodynamic coupling
Tunable colloidal swarmalators with hydrodynamic coupling Open
Swarmalators - entities that combine swarming with synchronization - offer a powerful framework for understanding systems where spatial organization and internal degrees of freedom are bidirectionally coupled. Such interplay arises in dive…
View article: Reversible formation of von-Willebrand-factor–platelet aggregates in microvascular blood flow
Reversible formation of von-Willebrand-factor–platelet aggregates in microvascular blood flow Open
Von Willebrand factor (VWF) and blood platelets play a key role in blood clotting by forming VWF–platelet aggregates. Using mesoscale hydrodynamic simulations, we study the behavior of these aggregates in microvascular blood flow. In micro…
View article: Binary mixtures of intelligent active Brownian particles with visual perception
Binary mixtures of intelligent active Brownian particles with visual perception Open
The collective properties of a binary mixture of A - and B -type self-steering particles endowed with visual perception are studied by computer simulations. Active Brownian particles (ABPs) are employed with an additional steering mechanis…
View article: Wrapping of Nano- and Microgels by Lipid-Bilayer Membranes
Wrapping of Nano- and Microgels by Lipid-Bilayer Membranes Open
The wrapping of nano- and microparticles is a fundamentally important pathway for their cellular uptake and depends on the physicochemical properties of both particle and membrane. Polymeric gels are a versatile class of materials whose el…
View article: Tunable colloidal swarmalators with hydrodynamic coupling
Tunable colloidal swarmalators with hydrodynamic coupling Open
Swarmalators - entities that combine swarming with synchronization - offer a powerful framework for understanding systems where spatial organization and internal degrees of freedom are bidirectionally coupled. Such interplay arises in dive…
View article: Collective Behavior in Active Swarms: Dynamics at the Edge of Disorder
Collective Behavior in Active Swarms: Dynamics at the Edge of Disorder Open
We propose a minimal flocking model based on the inertial spin model for agents with vision-based steering interactions -- alignment, group cohesion and local collision avoidance. Numerical simulations in two-dimensions show that the local…
View article: Binary Mixtures of Intelligent Active Brownian Particles with Visual Perception
Binary Mixtures of Intelligent Active Brownian Particles with Visual Perception Open
The collective properties of a binary mixture of A- and B-type self-steering particles endowed with visual perception are studied by computer simulations. Active Brownian particles are employed with an additional steering mechanism, which …
View article: Run-and-tumble dynamics of <i>Escherichia coli</i> is governed by its mechanical properties
Run-and-tumble dynamics of <i>Escherichia coli</i> is governed by its mechanical properties Open
The huge variety of microorganisms motivates fundamental studies of their behaviour with the possibility to construct artificial mimics. A prominent example is the Escherichia coli bacterium, which employs several helical flagella to exhib…
View article: Modelling motility of Trypanosoma brucei
Modelling motility of Trypanosoma brucei Open
African trypanosomiasis, or sleeping sickness, is a life-threatening disease caused by the protozoan parasite Trypanosoma brucei . The bloodstream form of T. brucei has a slender body with a relatively long active flagellum, which makes it…
View article: Intelligent Soft Matter: Towards Embodied Intelligence
Intelligent Soft Matter: Towards Embodied Intelligence Open
Intelligent soft matter stands at the intersection of materials science, physics, and cognitive science, promising to change how we design and interact with materials. This transformative field seeks to create materials that possess life-l…
View article: Alignment-induced self-organization of autonomously steering microswimmers: Turbulence, clusters, vortices, and jets
Alignment-induced self-organization of autonomously steering microswimmers: Turbulence, clusters, vortices, and jets Open
Microorganisms can sense their environment and adapt their movement accordingly, which gives rise to a multitude of collective phenomena, including active turbulence and bioconvection. In fluid environments, collective self-organization is…
View article: Adhesion-driven vesicle translocation through membrane-covered pores
Adhesion-driven vesicle translocation through membrane-covered pores Open
Translocation across barriers and through constrictions is a mechanism that is often used in vivo for transporting material between compartments. A specific example is apicomplexan parasites invading host cells through the tight junction t…
View article: The 2025 motile active matter roadmap
The 2025 motile active matter roadmap Open
Activity and autonomous motion are fundamental aspects of many living and engineering systems. Here, the scale of biological agents covers a wide range, from nanomotors, cytoskeleton, and cells, to insects, fish, birds, and people. Inspire…
View article: Run-and-tumble dynamics of <i>E. coli</i> is governed by its mechanical properties
Run-and-tumble dynamics of <i>E. coli</i> is governed by its mechanical properties Open
The huge variety of microorganisms motivates fundamental studies of their behavior with a possibility to construct artificial mimics. A prominent example is the E. coli bacterium which employs several helical flagella to exhibit a motility…
View article: Viscotaxis of beating flagella
Viscotaxis of beating flagella Open
Many biological microorganisms and artificial microswimmers react to external environmental gradients, like viscosity. Symmetric eukaryotic flagella swim up-gradient, while chirality implies drifting circles perpendicular to the gradient (…
View article: Intelligent soft matter: towards embodied intelligence
Intelligent soft matter: towards embodied intelligence Open
Intelligent soft matter is an emergent field.
View article: Capillary-driven self-assembly of soft ellipsoidal microgels at the air–water interface
Capillary-driven self-assembly of soft ellipsoidal microgels at the air–water interface Open
The adsorption of ellipsoidal colloidal particles on liquid interfaces induces interfacial deformation, resulting in anisotropic interface-mediated interactions and the formation of superstructures. Soft prolate-shaped microgels at the air…
View article: The 2024 Motile Active Matter Roadmap
The 2024 Motile Active Matter Roadmap Open
Activity and autonomous motion are fundamental aspects of many living and engineering systems. Here, the scale of biological agents covers a wide range, from nanomotors, cytoskeleton, and cells, to insects, fish, birds, and people. Inspire…
View article: Directed motion of cognitive active agents in a crowded three-way intersection
Directed motion of cognitive active agents in a crowded three-way intersection Open
Understanding the navigation through semi-dense crowds at intersections poses a significant challenge in pedestrian dynamics, with implications for facility design and insights into emergent collective behavior. To tackle this problem, a s…
View article: Chiral active systems near a substrate: Emergent damping length controlled by fluid friction
Chiral active systems near a substrate: Emergent damping length controlled by fluid friction Open
Chiral active fluids show the emergence of a turbulent behaviour characterised by multiple dynamic vortices whose maximum size varies for each experimental system, depending on conditions not yet identified. We propose and develop an appro…
View article: Modelling trypanosome motility
Modelling trypanosome motility Open
African trypanosomiasis, or sleeping sickness, is a life-threatening disease caused by the protozoan parasite Trypanosoma brucei. The bloodstream form of T. brucei has a slender body with a relatively long active flagellum, which makes it …
View article: Viscotaxis of Beating Flagella at Surfaces
Viscotaxis of Beating Flagella at Surfaces Open
Many biological microorganisms and artificial microswimmers react to external cues of environmental gradients by changing their swimming directions. We study here the behavior of eukarytic flagellated microswimmers in linear viscosity grad…
View article: How flagellated bacteria wobble
How flagellated bacteria wobble Open
A flagellated bacterium navigates fluid environments by rotating its helical flagellar bundle. The wobbling of the bacterial body significantly influences its swimming behavior. To quantify the three underlying motions--precession, nutatio…
View article: Chiral active systems near a substrate: Emergent damping length controlled by fluid friction
Chiral active systems near a substrate: Emergent damping length controlled by fluid friction Open
Chiral active fluids show the emergence of a turbulent behavior characterized by multiple dynamic vortices whose maximum size is specific for each experimental system. This is in contrast to hydrodynamic simulations in which the size of vo…
View article: Swirling Due to Misaligned Perception-Dependent Motility
Swirling Due to Misaligned Perception-Dependent Motility Open
A system of particles with motility variable in terms of a vision-type of perception is investigated by a combination of Langevin dynamics simulations in two-dimensional systems and an analytical approach based on conservation law principl…
View article: Alignment-Induced Self-Organization of Autonomously Steering Microswimmers: Turbulence, Vortices, and Jets
Alignment-Induced Self-Organization of Autonomously Steering Microswimmers: Turbulence, Vortices, and Jets Open
Systems of motile microorganisms exhibit a multitude of collective phenomena, including motility-induced phase separation and turbulence. Sensing of the environment and adaptation of movement plays an essential role in the emergent behavio…
View article: HTMPC: A heavily templated C++ library for large scale particle-based mesoscale hydrodynamics simulations using multiparticle collision dynamics
HTMPC: A heavily templated C++ library for large scale particle-based mesoscale hydrodynamics simulations using multiparticle collision dynamics Open
We present HTMPC, a Heavily Templated C++ library for large-scale simulations implementing multi-particle collision dynamics (MPC), a particle-based mesoscale hydrodynamic simulation method. The implementation is plugin-based, and designed…
View article: Interacting Streams of Cognitive Active Agents in a Three-Way Intersection
Interacting Streams of Cognitive Active Agents in a Three-Way Intersection Open
The emergent collective motion of active agents - in particular pedestrians - at a three-way intersection is studied by Langevin simulations of cognitive intelligent active Brownian particles (iABPs) with directed visual perception and sel…