149 citations · 980 across the 28 of their papers we have counts for
11 papers · 1 filter
Research Notes: Gradient sensing in Bayesian chemotaxis
Andrea Auconi, Maja Novak, Benjamin M. Friedrich
Bayesian chemotaxis is an information-based target search problem inspired by biological chemotaxis. It is defined by a decision strategy coupled to the dynamic estimation of targe…
Synchronization in cilia carpets and the Kuramoto model with local coupling: breakup of global synchronization in the presence of noise
Anton Solovev, Benjamin M. Friedrich
Carpets of beating cilia represent a paradigmatic example of self-organized synchronization of noisy biological oscillators, characterized by traveling waves of cilia phase. We pre…
Synchronization in cilia carpets: multiple metachronal waves are stable, but one wave dominates
Anton Solovev, Benjamin M. Friedrich
Carpets of actively bending cilia represent arrays of biological oscillators that can exhibit self-organized metachronal synchronization in the form of traveling waves of cilia pha…
Bayesian gradient sensing in the presence of rotational diffusion
Maja Novak, Benjamin M. Friedrich
Biological cells estimate concentration gradients of signaling molecules with a precision that is limited not only by sensing noise, but additionally by the cell's own stochastic m…
Surfing along concentration filaments: sperm chemotaxis in physiological shear flows
Steffen Lange, Benjamin M. Friedrich
Many motile biological cells navigate along concentration gradients of signaling molecules: This chemotaxis guides for instance sperm cells from marine invertebrates, which have to…
Chemokinetic scattering, trapping, and avoidance of active Brownian particles
Justus A. Kromer, Noelia de la Cruz, Benjamin M. Friedrich
We present a theory of chemokinetic search agents that regulate directional fluctuations according to distance from a target. A dynamic scattering effect reduces the probability to…
Optimal decision making for sperm chemotaxis in the presence of noise
Justus A. Kromer, Steffen Märcker, Steffen Lange +2
For navigation, microscopic agents such as biological cells rely on noisy sensory input. In cells performing chemotaxis, such noise arises from the stochastic binding of signaling…
Load response of shape-changing microswimmers scales with their energy efficiency
Benjamin M. Friedrich
External forces acting on a microswimmer can feed back on its self-propulsion mechanism. We discuss this load response for a generic microswimmer that swims by cyclic shape changes…
Critical Point in Self-Organized Tissue Growth
Daniel Aguilar Hidalgo, Steffen Werner, Ortrud Wartlick +3
We present a theory of pattern formation in growing domains inspired by biological examples of tissue development. Gradients of signaling molecules regulate growth, while growth ch…
Nematic order by elastic interactions and cellular rigidity sensing
Benjamin M. Friedrich, Samuel A. Safran
We predict spontaneous nematic order in an ensemble of active force generators with elastic interactions as a minimal model for early nematic alignment of short stress fibers in no…
Steering chiral swimmers along noisy helical paths
Benjamin M. Friedrich, Frank Jülicher
Chemotaxis along helical paths towards a target releasing a chemoattractant is found in sperm cells and many microorganisms. We discuss the stochastic differential geometry of the…