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Debnath T, Ghosh PK, Nori F, et al. Diffusion of active dimers in a Couette flow. Soft Matter. 2017;13(15):2793-2799doi: 10.1039/c7sm00356k.
Debnath, T., Ghosh, P. K., Nori, F., Li, Y., Marchesoni, F., & Li, B. (2017). Diffusion of active dimers in a Couette flow. Soft matter, 13(15), 2793-2799. https://doi.org/10.1039/c7sm00356k
Debnath, Tanwi, et al. "Diffusion of active dimers in a Couette flow." Soft matter vol. 13,15 (2017): 2793-2799. doi: https://doi.org/10.1039/c7sm00356k
Debnath T, Ghosh PK, Nori F, Li Y, Marchesoni F, Li B. Diffusion of active dimers in a Couette flow. Soft Matter. 2017 Apr 12;13(15):2793-2799. doi: 10.1039/c7sm00356k. PMID: 28345093.
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Soft Matter. 2017 Apr 12;13(15):2793-2799. doi: 10.1039/c7sm00356k.

Diffusion of active dimers in a Couette flow.

Soft matter

Tanwi Debnath, Pulak K Ghosh, Franco Nori, Yunyun Li, Fabio Marchesoni, Baowen Li

Affiliations

  1. Department of Chemistry, University of Calcutta, Kolkata 700009, India.

PMID: 28345093 DOI: 10.1039/c7sm00356k

Abstract

We study the 3D dynamics of an elastic dimer consisting of an active swimmer bound to a passive cargo, both suspended in a Couette flow. Using numerical simulations, we determine the diffusivity of such an active dimer in the presence of long-range hydrodynamic interactions for different values of its self-propulsion speed and the Couette flow. We observe that the effect of hydrodynamic interactions is greatly enhanced under the condition that self-propulsion is strong enough to contrast the shear flow. The magnitude of the effect grows with the size of the dimer's constituents relative to their distance, which makes it appreciable under experimental conditions.

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