Ce jeudi 26 février 2026 à 14h, le Laboratoire de Mathématique Appliqués du Havre (LMAH) accueille Jessie Levillain de CNES et INSA Toulouse, pour un exposé intitulé :
Fokker-Planck based mathematical models for flagellar activation mechanisms
Résumé :
Many micro-swimmers in nature achieve locomotion via active appendages-like organelles such as cilia or flagella, when moving inside fluids at a low Reynolds number. In order to swim as efficiently as possible in viscous fluids, these cilia and flagella all have a characteristic periodic motion. This motion arises from a active internal structure that runs along the entire length of the filament, known as the axoneme. Within the axoneme, forces are generated by molecular motors that act collectively to produce the filament’s curvature.
After analyzing a first model for molecular motors, we will introduce several formulations of coupled partial differential equation systems describing activation within a small periodicity cell. We then prove the presence of a supercritical Hopf bifurcation in the system. Theoretical results will be complemented by numerical simulations.
L’exposé sera retransmis en visioconférence.
Les personnes souhaitant assister à l’exposé à distance pourront se connecter via un lien. Pour l’obtenir, contacter les organisateur.
