Curvature-induced activation of a passive tracer in an active bath

  • Mallory S
  • Valeriani C
  • Cacciuto A
  • 28


    Mendeley users who have this article in their library.
  • 24


    Citations of this article.


We use numerical simulations to study the motion of a large asymmetric tracer immersed in a low density suspension of self-propelled nanoparticles in two dimensions. Specifically, we analyze how the curvature of the tracer affects its translational and rotational motion in an active environment. We find that even very small amounts of curvature are sufficient for the active bath to impart directed motion to the tracer which results in its effective activation. We propose simple scaling arguments to characterize this induced activity in terms of the curvature of the tracer and the strength of the self-propelling force. Our results suggest new ways of controlling the transport properties of passive tracers in an active medium by carefully tailoring their geometry.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Get full text


  • S. A. Mallory

  • C. Valeriani

  • A. Cacciuto

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free