Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Diffusion properties of self-propelled particles in cellular flows

Author affiliations

Abstract

We study the dynamics of a self-propelled particle advected by a steady laminar flow. The persistent motion of the self-propelled particle is described by an active Ornstein–Uhlenbeck process. We focus on the diffusivity properties of the particle as a function of persistence time and free-diffusion coefficient, revealing non-monotonic behaviors, with the occurrence of a minimum and a steep growth in the regime of large persistence time. In the latter limit, we obtain an analytical prediction for the scaling of the diffusion coefficient with the parameters of the active force. Our study sheds light on the effect of a flow-field on the diffusion of active particles, such as living microorganisms and motile phytoplankton in fluids.

Graphical abstract: Diffusion properties of self-propelled particles in cellular flows

Back to tab navigation

Article information


Submitted
15 Mar 2020
Accepted
20 May 2020
First published
20 May 2020

Soft Matter, 2020, Advance Article
Article type
Paper

Diffusion properties of self-propelled particles in cellular flows

L. Caprini, F. Cecconi, A. Puglisi and A. Sarracino, Soft Matter, 2020, Advance Article , DOI: 10.1039/D0SM00450B

Social activity

Search articles by author

Spotlight

Advertisements