Straight-to-curvilinear motion transition of a swimming droplet caused by the 
susceptibility to fluctuations

Suda, Saori; Suda, Tomoharu; Ohmura, Takuya; Ichikawa, Masatoshi

doi:10.1103/PhysRevLett.127.088005

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Straight-to-curvilinear motion transition of a swimming droplet caused by the susceptibility to fluctuations

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Ohmura, Takuya
Max Planck Institute for Terrestrial Microbiology, Max Planck Society;

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https://doi.org/10.1103/PhysRevLett.127.088005
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Citation

Suda, S., Suda, T., Ohmura, T., & Ichikawa, M. (2021). Straight-to-curvilinear motion transition of a swimming droplet caused by the susceptibility to fluctuations. Physical Review Letters, 127(8): 088005. doi:10.1103/PhysRevLett.127.088005.

Cite as: https://hdl.handle.net/21.11116/0000-000A-A452-0

Abstract

In this Letter, a water-in-oil swimming droplet's transition from straight to curvilinear motion is investigated experimentally and theoretically. An analysis of the experimental results and the model reveal that the motion transition depends on the susceptibility of the droplet's direction of movement to external stimuli as a function of environmental parameters such as droplet size. The simplicity of the present experimental system and the model suggests implications for a general class of transitions in self-propelled swimmers.