FLUCTUATING VESICLES OF NONSPHERICAL TOPOLOGY
FLUCTUATING VESICLES OF NONSPHERICAL TOPOLOGY
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DOI：
10.1103/physrevlett.72.168
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发表时间：
1994-01-03
影响因子：
8.6
通讯作者：
FOURCADE, B
中科院分区：
文献类型：
--
作者：
MICHALET, X;BENSIMON, D;FOURCADE, B
我们报告的观察磷脂囊泡的高拓扑结构，表现出强烈的热波动。通过深刻影响囊泡的整体形状，这些与膜通常的局部热波动不同。它们可以被描述为连接两个附近的同心膜的颈部的位置波动。使用边界层方法，我们确定的形状和弹性能量的颈部和证实这一分析的最小化问题的数值解。这种方法导致我们的实验定性正确的描述。
We report the observation of phospholipid vesicles of high topology, exhibiting strong thermal fluctuations. By deeply affecting the global shape of the vesicle, these differ from the usual local thermal undulations of the membrane. They can be described as positional fluctuations of necks linking two nearby concentric membranes. Using boundary layer methods we determine the shape and elastic energy of the necks and corroborate this analysis by a numerical solution of the minimization problem. This approach leads to a qualitatively correct description of our experiments.