SPINODAL FLUCTUATIONS OF BUDDING VESICLES

被引：39

作者：

DOBEREINER, HG

EVANS, E

SEIFERT, U

WORTIS, M

机构：

[1] UNIV BRITISH COLUMBIA,DEPT PHYS,VANCOUVER,BC V6T 2A6,CANADA

[2] MAX PLANCK INST KOLLOID & GRENZFLACHENFORSCH,D-14513 TELTOW,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.75.3360

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first systematic observations of precursor effects in Shape transitions of phospholipid-bilayer vesicles in aqueous solution. Vesicles change abruptly, as temperature T is raised, from a prolate ellipsoidal shape to a ''budded'' shape consisting of two unequal Spheres connected by a narrow neck. On the low-T side of this transition, we see large thermal shape fluctuations (quasicritical fluctuations) and long relaxation times (quasicritical slowing down), which may be interpreted, in the context of a phi(6) Landau theory, as the fluctuations of a metastable state near its spinodal instability.

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页码：3360 / 3363

页数：4

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