Microswimmers enhance the rotational diffusivity of colloids.
ORAL
Abstract
The random fluid flows generated within a suspension of swimming microorganisms have been shown to affect the translational diffusivity of suspended passive particles. Here we report results from experiments and simulations which show that a dramatic enhancement is found as well for the rotational diffusivity. The consequences of this effect when the passive tracers are replaced with small active particles will be discussed.
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