12 papers
Reaction Delays Boost, Rectify, and Reverse Motility in Activity Landscapes
Constantin Rein, Klaus Kroy, Viktor Holubec
Local detailed balance restricts transport by self-propulsion in static activity landscapes. We show that a delayed speed adaptation (``delayed motility/kinesis'') generically brea…
Spatially Structured Cohesion from Extremal Alignment in Topological Active Matter
Julian Giraldo-Barreto, Viktor Holubec
Alignment interactions in active matter are typically modeled as relaxational dynamics toward local consensus. In unbounded systems, this makes alignment effectively decoupled from…
Strong Violation of the Thermodynamic Uncertainty Relation in a Minimal Autonomous Heat Engine
Enrique P. Cital, Viktor Holubec
Thermodynamic uncertainty relations (TURs) impose a universal trade-off between current precision and entropy production in autonomous steady states, constraining in particular the…
Feedback control and delayed interactions in active matter
Viktor Holubec, Frank Cichos
Feedback control plays a central role in active matter, yet it is inevitably accompanied by noise and finite perception--action delays. This Perspective reviews recent advances on…
Inertia Tames Fluctuations in Autonomous Stationary Heat Engines
Enrique P. Cital, Viktor Holubec
Thermodynamic uncertainty relations (TURs) provide fundamental constraints on the interplay between power fluctuations, entropy production, and efficiency in overdamped stationary…
Programmable Hydrodynamics of Active Particles
Lisa Rohde, Gordei Anchutkin, Viktor Holubec +1
Self-propelled microparticles create flow fields that determine how they interact with surfaces, external flows, and each other. These flow fields fall into distinct classes--pushe…