Rheology of giant vesicles:: A micropipette study -: art. no. 108103

被引：15

作者：

Fa, N ^{[1
]}

Marques, CM ^{[1
]}

Mendes, E ^{[1
]}

Schröder, AP ^{[1
]}

机构：

[1] CNRS, UMR 7506, LDFC, F-67070 Strasbourg, France

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.92.108103

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We develop a micropipette rheometer to study the effect of oscillatory shear flow on the spontaneous fluctuations of phospholipid bilayers. Our results on giant vesicles show that oscillatory shear flow leads to a suppression of membrane fluctuations. They also imply that the Helfrich equation is modified in the presence of the flow. This equation, a fundamental constitutive relation between the amount of area stored in the fluctuations and the membrane tension, must be supplemented under oscillatory shear by a flow excess function that we determine.

引用

页码：108103 / 1

页数：4

共 18 条

[1]

Alberts B., 1994, MOL BIOL CELL

[2] SWELLING OF CHARGED LIPIDS AND FORMATION OF LIPOSOMES ON ELECTRODE SURFACES [J].