113 citations · 614 across the 27 of their papers we have counts for
27 papers
Squirming motion near corrugated surfaces
Sagnik Garai, Thomas G. Fai, Christina Kurzthaler
Swimming microorganisms often operate in complex confinement, where an interplay of long-ranged hydrodynamic interactions and a short-ranged repulsive interaction can give rise to…
Disorder-induced persistent random motion and trapping of microswimmers
Mirko Residori, Sebastian Aland, Christina Kurzthaler
Microorganisms ofter move in confined, disordered environments, where hydrodynamic couplings can modify their transport behavior. Using extensive finite-element simulations, we inv…
Active Brownian Dynamics in Channels: First-Passage and Spatiotemporal Properties via Siegmund Duality
Yanis Baouche, Mathis Guéneau, Christina Kurzthaler
Accumulation at boundaries represents a widely observed phenomenon in active systems with implications for microbial ecology and engineering applications. To rationalize the underl…
Vorticity-induced surfing and trapping in porous media
Pallabi Das, Mirko Residori, Axel Voigt +2
Microorganisms often encounter strong confinement and complex hydrodynamic flows while navigating their habitats. Combining finite-element methods and stochastic simulations, we st…
Hydrodynamic Attraction and Hindered Diffusion Govern First-passage Times of Swimming Microorganisms
Yanis Baouche, Magali Le Goff, Thomas Franosch +1
The motion of microorganisms in their natural habitat is strongly influenced by their propulsion mechanisms, geometrical constraints, and random fluctuations. Here, we study numeri…
Optimal first-passage times of active Brownian particles under stochastic resetting
Yanis Baouche, Christina Kurzthaler
We study the first-passage-time (FPT) properties of an active Brownian particle under stochastic resetting to its initial configuration, comprising its position and orientation, to…
First-passage-time statistics of active Brownian particles: A perturbative approach
Yanis Baouche, Magali Le Goff, Christina Kurzthaler +1
We study the first-passage-time (FPT) properties of active Brownian particles to reach an absorbing wall in two dimensions. Employing a perturbation approach we obtain exact analyt…
Hydroelastic scattering and trapping of microswimmers
Sagnik Garai, Ursy Makanga, Akhil Varma +1
Deformable boundaries are omnipresent in the habitats of swimming microorganisms, leading to intricate hydroelastic couplings. Employing a perturbation theory, valid for small defo…
The 2024 Motile Active Matter Roadmap
Gerhard Gompper, Howard A. Stone, Christina Kurzthaler +29
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, cytoskelet…
Flow Through Porous Media at the Percolation Transition
Mirko Residori, Suvendu Mandal, Axel Voigt +1
We study low-Reynolds-number fluid flow through a two-dimensional porous medium modeled as a Lorentz gas. Using extensive finite element simulations we fully resolve the flow field…
Active Brownian particle under stochastic orientational resetting
Yanis Baouche, Thomas Franosch, Matthias Meiners +1
We employ renewal processes to characterize the spatiotemporal dynamics of an active Brownian particle under stochastic orientational resetting. By computing the experimentally acc…
Giant Activity-Induced Stress Plateau in Entangled Polymer Solutions
Davide Breoni, Christina Kurzthaler, Benno Liebchen +2
We study the viscoelastic properties of highly entangled, flexible, self-propelled polymers using Brownian dynamics simulations. Our results show that the active motion of the poly…
Characterization and Control of the Run-and-Tumble Dynamics of {\it Escherichia Coli}
Christina Kurzthaler, Yongfeng Zhao, Nan Zhou +8
We characterize the full spatiotemporal gait of populations of swimming {\it Escherichia coli} using renewal processes to analyze the measurements of intermediate scattering functi…
Quantitative characterization of run-and-tumble statistics in bulk bacterial suspensions
Yongfeng Zhao, Christina Kurzthaler, Nan Zhou +8
We introduce a numerical method to extract the parameters of run-and-tumble dynamics from experimental measurements of the intermediate scattering function. We show that proceeding…
Transport of a passive scalar in wide channels with surface topography
James V. Roggeveen, Howard A. Stone, Christina Kurzthaler
We generalize classical dispersion theory for a passive scalar to derive an asymptotic long-time convection-diffusion equation for a solute suspended in a wide, structured channel…
Crowding-Enhanced Diffusion: An Exact Theory for Highly Entangled Self-Propelled Stiff Filaments
Suvendu Mandal, Christina Kurzthaler, Thomas Franosch +1
We study a strongly interacting crowded system of self-propelled stiff filaments by event-driven Brownian dynamics simulations and an analytical theory to elucidate the intricate i…
Microswimmers near corrugated, periodic surfaces
Christina Kurzthaler, Howard A. Stone
We explore hydrodynamic interactions between microswimmers and corrugated, or rough, surfaces, as found often in biological systems and microfluidic devices. Using the Lorentz reci…
Two-dimensional Brownian motion of anisotropic dimers
Daniel B. Mayer, Erick Sarmiento-Gómez, Manuel A. Escobedo-Sánchez +4
We study the 2D motion of colloidal dimers by single-particle tracking and compare the experimental observations obtained by bright-field microscopy to theoretical predictions for…
A Geometric Criterion for the Optimal Spreading of Active Polymers in Porous Media
Christina Kurzthaler, Suvendu Mandal, Tapomoy Bhattacharjee +3
We perform Brownian dynamics simulations of active stiff polymers undergoing run-reverse dynamics, and so mimic bacterial swimming, in porous media. In accord with recent experimen…
Particle motion nearby rough surfaces
Christina Kurzthaler, Lailai Zhu, Amir A. Pahlavan +1
We study the hydrodynamic coupling between particles and solid, rough boundaries characterized by random surface textures. Using the Lorentz reciprocal theorem, we derive analytica…
Elastic behavior of a semiflexible polymer in 3D subject to compression and stretching forces
Christina Kurzthaler
We elucidate the elastic behavior of a wormlike chain in 3D under compression and provide exact solutions for the experimentally accessible force-extension relation in terms of gen…
Bimodal probability density characterizes the elastic behavior of a semiflexible polymer in 2D under compression
Christina Kurzthaler, Thomas Franosch
We explore the elastic behavior of a wormlike chain under compression in terms of exact solutions for the associated probability densities. Strikingly, the probability density for…
Intermediate scattering function of an anisotropic Brownian circle swimmer
Christina Kurzthaler, Thomas Franosch
Microswimmers exhibit noisy circular motion due to asymmetric propulsion mechanisms, their chiral body shape, or by hydrodynamic couplings in the vicinity of surfaces. Here, we emp…
Frequency-dependent higher-order Stokes singularities near a planar elastic boundary: implications for the hydrodynamics of an active microswimmer near an elastic interface
Abdallah Daddi-Moussa-Ider, Christina Kurzthaler, Christian Hoell +6
The emerging field of self-driven active particles in fluid environments has recently created significant interest in the biophysics and bioengineering communities owing to their p…