Abstract
We investigate dynamics of a deformable self-propelled particle under external fields in two dimensions based on the time-evolution equations for the center of mass and a tensor variable characterizing deformations. We consider two kinds of external force. One is a gravitational force which enters additively in the time-evolution equation for the center of mass. The other is an electric force supposing that a dipole moment is induced in the particle. This force is added to the equation for the deformation tensor. It is shown that a rich variety of dynamics appears by changing the strength of the forces and the migration velocity of a self-propelled particle. A theoretical analysis is carried out to clarify the dynamics and the bifurcations.
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Tarama, M., Ohta, T. Dynamics of a deformable self-propelled particle under external forcing. Eur. Phys. J. B 83, 391 (2011). https://doi.org/10.1140/epjb/e2011-20307-7
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DOI: https://doi.org/10.1140/epjb/e2011-20307-7