Hydrodynamic lift of vesicles under shear flow in microgravity

被引：61

作者：

Callens, N. ^{[1
]}

Minetti, C. ^{[1
]}

Coupier, G. ^{[2
]}

Mader, M. -A. ^{[2
]}

Dubois, F. ^{[1
]}

Misbah, C. ^{[2
]}

Podgorski, T. ^{[2
]}

机构：

[1] Univ Libre Brussels, Micrograv Res Ctr, B-1050 Brussels, Belgium

[2] Univ Grenoble 1, CNRS, Spectrometrie Phys Lab, F-38402 St Martin Dheres, France

来源：

EPL | 2008年 / 83卷 / 02期

关键词：

D O I：

10.1209/0295-5075/83/24002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dynamics of a vesicle suspension in a shear flow between parallel plates has been investigated under microgravity conditions, where vesicles are only submitted to hydrodynamic effects such as lift forces due to the presence of walls and drag forces. The temporal evolution of the spatial distribution of the vesicles has been recorded thanks to digital holographic microscopy, during parabolic flights and under normal gravity conditions. The collected data demonstrates that vesicles are pushed away from the walls with a lift velocity proportional to (gamma)over dotR(3)/z(2), where.. is the shear rate, R the vesicle radius and z its distance from the wall. This scaling as well as the dependence of the lift velocity upon the vesicle aspect ratio are consistent with the theoretical predictions by Olla (J. Phys. II, 7 (1997) 1533). Copyright (C) EPLA, 2008.

引用

页数：6

共 26 条

[1] Dynamics of vesicles in a wall-bounded shear flow [J].

Abkarian, M ;

Viallat, A .

BIOPHYSICAL JOURNAL, 2005, 89 (02) :1055-1066

[2] Tank treading and unbinding of deformable vesicles in shear flow: Determination of the lift force [J].

Abkarian, M ;

Lartigue, C ;

Viallat, A .

PHYSICAL REVIEW LETTERS, 2002, 88 (06) :4

[3]

ANGELOVA MI, 1992, PROG COLL POL SCI S, V89, P127

[4] Steady to unsteady dynamics of a vesicle in a flow -: art. no. 011906 [J].

Beaucourt, J ;

Rioual, F ;

Séon, T ;

Biben, T ;

Misbah, C .

PHYSICAL REVIEW E, 2004, 69 (01) :17

[5] Lift force and dynamical unbinding of adhering vesicles under shear flow [J].

Cantat, I ;

Misbah, C .

PHYSICAL REVIEW LETTERS, 1999, 83 (04) :880-883

[6] Dynamics and rheology of a dilute suspension of vesicles: Higher-order theory [J].

Danker, Gerrit ;

Biben, Thierry ;

Podgorski, Thomas ;

Verdier, Claude ;

Misbah, Chaouqi .

PHYSICAL REVIEW E, 2007, 76 (04)

[7] Deformation of giant lipid bilayer vesicles in shear flow [J].

de Haas, KH ;

Blom, C ;

van den Ende, D ;

Duits, MHG ;

Mellema, J .

PHYSICAL REVIEW E, 1997, 56 (06) :7132-7137

[8] Digital holographic microscopy with reduced spatial coherence for three-dimensional particle flow analysis [J].

Dubois, F ;

Callens, N ;

Yourassowsky, C ;

Hoyos, M ;

Kurowski, P ;

Monnom, O .

APPLIED OPTICS, 2006, 45 (05) :864-871

[9] Partial spatial coherence effects in digital holographic microscopy with a laser source [J].

Dubois, F ;

Requena, MLN ;

Minetti, C ;

Monnom, O ;

Istasse, E .

APPLIED OPTICS, 2004, 43 (05) :1131-1139

[10] Border processing in digital holography by extension of the digital hologram and reduction of the higher spatial frequencies [J].

Dubois, F ;

Monnom, O ;

Yourassowsky, C ;

Legros, JC .

APPLIED OPTICS, 2002, 41 (14) :2621-2626

← 1 2 3 →