Effective viscosity of microswimmer suspensions
Soft Condensed Matter
2014-12-12 v2
Abstract
The measurement of a quantitative and macroscopic parameter to estimate the global motility of a large population of swimming biological cells is a challenge Experiments on the rheology of active suspensions have been performed. Effective viscosity of sheared suspensions of live unicellular motile micro-algae (\textit{Chlamydomonas Reinhardtii}) is far greater than for suspensions containing the same volume fraction of dead cells and suspensions show shear thinning behaviour. We relate these macroscopic measurements to the orientation of individual swimming cells under flow and discuss our results in the light of several existing models.
Cite
@article{arxiv.0909.4193,
title = {Effective viscosity of microswimmer suspensions},
author = {Salima Rafai and Levan Jibuti and Philippe Peyla},
journal= {arXiv preprint arXiv:0909.4193},
year = {2014}
}