Rheology of dilute suspensions of vesicles and red blood cells
| dc.creator | Vitkova, Victoria | |
| dc.creator | Mader, Maud-Alix | |
| dc.creator | Misbah, Chaouqi | |
| dc.creator | Podgorski, Thomas | |
| dc.date | 2007-07-29 | |
| dc.date.accessioned | 2026-07-07T08:20:56Z | |
| dc.date.available | 2026-07-07T08:20:56Z | |
| dc.description | We present rheology experiments on dilute solutions of vesicles and red blood cells (RBC). Varying the viscosity ratio $λ$ between internal and external fluids, the microscopic dynamics of suspended objects can be qualitatively changed from tank-treading ($tt$) to tumbling ($tb$). We find that in the tt regime the viscosity $η$, decreases when $λ$ increases, in contrast with droplet emulsions and elastic capsule theories which are sometimes invoked to model RBC dynamics. At a critical $λ$ (close to the tt-tb transition) $η$ exhibits a minimum before it increases in the tb regime. This is consistent with a recent theory for vesicles. This points to the nontrivial fact that the cytoskeleton in RBC does not alter the qualitative evolution of $η$ and that, as far as rheology is concerned, vesicle models might be a better description. | |
| dc.description | 4 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/0707.4278 | |
| dc.identifier | http://arxiv.org/abs/0707.4278 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/135215 | |
| dc.subject | Soft Condensed Matter | |
| dc.subject | Materials Science | |
| dc.title | Rheology of dilute suspensions of vesicles and red blood cells | |
| dc.type | text |