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Updated: Jun 30, 2025

The Swimmeret System of Crayfish: A Practical Guide for the Dissection of the Nerve Cord and Extracellular Recordings of the Motor Pattern
Published on: November 25, 2014
Purcell's swimmers in pairs
Rossella Attanasi1, Marta Zoppello2, Gaetano Napoli3
1Dipartimento di Matematica e Fisica "Ennio de Giorgi", Università del Salento, 73100 Lecce, Italy.
Abstract:
We investigate the effects of hydrodynamic interactions between microorganisms swimming at low Reynolds numbers, treating them as a control system. We employ Lie brackets analysis to examine the motion of two neighboring three-link swimmers interacting through the ambient fluid in which they propel themselves. Our analysis reveals that the hydrodynamic interaction has a dual consequence: on one hand, it diminishes the system's efficiency; on the other hand, it dictates that the two microswimmers must synchronize their motions to attain peak performance. Our findings are further corroborated by numerical simulations of the governing equations of motion.
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