Nanoswimmers in a ratchet potential: effects of a transverse rocking force

Tasinkevych, M. ORCID: 0000-0001-6689-1844 and Ryabov, A., 2024. Nanoswimmers in a ratchet potential: effects of a transverse rocking force. Journal of Molecular Liquids, 393: 123566. ISSN 0167-7322

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We study the dynamics of a chemical nanoswimmer in a ratchet potential, which is periodically rocked in the transverse direction. As a result of the mechanochemical coupling, the self-propulsion velocity becomes force-dependent and particle trajectories are rectified in the direction of the ratchet modulation. The magnitude and direction of the nanoswimmer mean velocity depend upon both the rocking amplitude and the frequency. Remarkably, for frequencies larger than the inverse correlation time of the rotational diffusion, the velocity exhibits oscillatory behaviour as a function of the amplitude and the frequency with multiple reversals of the sign. These findings suggest that mechanochemical coupling can be utilized for controlling the motion of chemically active particles at the nanoscale.

Item Type: Journal article
Publication Title: Journal of Molecular Liquids
Creators: Tasinkevych, M. and Ryabov, A.
Publisher: Elsevier
Date: 1 January 2024
Volume: 393
ISSN: 0167-7322
S0167732223023723Publisher Item Identifier
Rights: This is an open access article under the CC BY-NC license (
Divisions: Schools > School of Science and Technology
Record created by: Jonathan Gallacher
Date Added: 30 Jan 2024 09:37
Last Modified: 30 Jan 2024 09:37

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