2000/01/01 by Salima Rafaı̈, Salima Rafai, Levan Jibuti +7 · 8 citations
Engineering · Health Professions · Medicine · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Autoimmune Bullous Skin Diseases #Micro and Nano Robotics #Microfluidic and Bio-sensing Technologies #Oral and gingival health research #Salivary Gland Tumors Diagnosis and Treatment #cond-mat.soft
paper · pdf · doi:10.1103/physrevlett.104.098102
published as Phys. Rev. Lett. 104, 098102 (2010)
openalex publication_date 2000/01/01 · arxiv created 2010/01/26 · arxiv updated 2014/12/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
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 microalgae (Chlamydomonas Reinhardtii) is far greater than for suspensions containing the same volume fraction of dead cells. In addition, suspensions show shear thinning behavior. 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.