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SYGF: Guest Country Symposium France: Soft, Active and Alive: Emergent Properties in Living Matter
SYGF 1: Guest Country Symposium France: Soft, Active and Alive: Emergent Properties in Living Matter (SYGF)
SYGF 1.5: Invited Talk
Wednesday, March 11, 2026, 17:15–17:45, HSZ/AUDI
Swimming and Swarming of Intelligent Active Particles — Segun Goh1,2, Priyanka Iyer1, Rajendra Singh Negi1, and •Gerhard Gompper1 — 1Institute for Advanced Simulation, Forschungszentrum Juelich, Germany — 2Sejong University, Seoul, South Korea
The collective behavior of motile active matter displays many emergent self-organization, like flocking and swarming [1]. For living systems, as well as microrobotic systems, activity and locomotion is combined with sensing of the environment and adaption of motion. We study such system by considering models of `intelligent' active particles with visual perception and self-steering in both dry [2,3] and wet systems [4,5].
Here, we focus on wet systems, where hydrodynamic interactions contribute significantly or dominate the self-organization [4,5]. Pusher- and puller-type squirmers display very different emergent behaviors. Pusher-pursuers may not be able to catch up with pusher-targets even at larger pursuer speeds [4]. Also, aligning pushers can form stable pairs only with speed adjustment of the pursuer . In large ensembles, pushers display active turbulence, while pullers form unstable clusters, vortices, and jets [5].
[1] G. Gompper et al.; J. Phys. Condens. Matter 37, 143501 (2025). [2] R.S. Negi et al.; Phys. Rev. Research 6, 013118 (2024) [3] P. Iyer et al.; Commun. Phys. 7, 379 (2024) [4] S. Goh et al.; Commun. Phys. 6, 31 (2023) [5] S. Goh et al.; Phys. Rev. Research 7, 013142 (2025)
Keywords: Intelligent active matter; self-steering particles; hydrodynamics; swarming; active turbulence