Speaker
David Voráč
(Charles University, Prague)
Description
The active Brownian particle model can exhibit directed motion when subjected to spatial gradients in activity, such as light‑induced motility in bacteria. In the absence of external forces, this rectification arises only in two or more dimensions. Here, we use computer simulations to study Vicsek‑like flocks of aligning active Brownian particles moving through two‑dimensional environments with geometrically modulated activity. We demonstrate how activity gradients and local alignment cooperate to enhance directed transport. By comparing these results with non‑interacting models, we isolate and highlight the role of collective effects in this rectification process.
Primary authors
Artem Ryabov
(Charles University)
David Voráč
(Charles University, Prague)
Dr
Viktor Holubec
(Charles University, Prague)
