Propulsion hydrodynamics of a butterfly micro-swimmer

Iima, Makoto; Mikhailov, Alexander S.

doi:10.1209/0295-5075/85/44001

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Propulsion hydrodynamics of a butterfly micro-swimmer

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Mikhailov, Alexander S.
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Iima, M., & Mikhailov, A. S. (2009). Propulsion hydrodynamics of a butterfly micro-swimmer. Europhysics Letters, 85(4): 44001. doi:10.1209/0295-5075/85/44001.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0010-F9F8-1

Abstract

Propulsion motion of a simple mechanical model at low Reynolds numbers is considered. The model consists of two spheroids (wings) connected by a hinge. Its non-reciprocal operation cycles represent combinations of flapping motions of the wings and of their rotations, resembling conformational motions characteristic for real protein machines and similar to the propulsion pattern of a butterfly. The net generated velocity and the net stall force, exhibited by an immobilized machine on its support, are calculated and their dependence on the model parameters is discussed.