On coupling between the orientation and the shape of a vesicle under a shear flow.
Eur Phys J E Soft Matter
; 22(4): 275-80, 2007 Apr.
Article
en En
| MEDLINE
| ID: mdl-17396219
A simple 2D model of deformable vesicles tumbling in a shear under flow is introduced in order to account for the main qualitative features observed experimentally as shear rates are increased. The simplicity of the model allows for a full analytical tractability while retaining the essential physical ingredients. The model reveals that the main axes of the vesicle undergo oscillations which are coupled to the vesicle orientation in the flow. The model reproduces and sheds light on the main novel features reported in recent experiments [M. Mader et al., Eur. Phys. J. E. 19, 389 (2006)], namely that both coefficients A and B that enter the Keller-Skalak equation, d psi/dt = A+B cos(2 psi) (psi is the vesicle orientation angle in the shear flow), undergo a collapse upon increasing shear rate.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Microfluídica
/
Liposomas
/
Fluidez de la Membrana
Tipo de estudio:
Qualitative_research
Idioma:
En
Revista:
Eur Phys J E Soft Matter
Asunto de la revista:
BIOFISICA
Año:
2007
Tipo del documento:
Article
País de afiliación:
Francia
Pais de publicación:
Francia