Statistical Physics of Self-Propelled Particles on Frictional Surfaces

• Applicant: Dr. Alexander Antonov
• Subject Area: Statistical Physics, Nonlinear Dynamics, Complex Systems, Soft and Fluid Matter, Biological Physics
• Term: since 2025
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 570812137

Friction plays a crucial role in governing the motion of self-propelled (active) objects such as bacteria, animals, and microswimmers. Systems involving solid-solid contact – such as granular media or robots – are governed by Coulomb friction, which is nearly independent of relative velocity. The goal of the present project is to investigate the collective dynamics of self-propelled particles under velocity-independent friction. This study is of significant practical relevance for robotic active matter systems operating on surfaces, where such frictional forces govern the behavior of the system. The present project will provide insights by combining experiments along with the theoretical approaches and numerical simulations.

• DFG Programme: Research Grants
• International Connection: Israel, Italy
• Cooperation Partners: Professor Lorenzo Caprini; Professorin Yael Roichman