The effect of curvature and topology on membrane hydrodynamics
The effect of curvature and topology on membrane hydrodynamics
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曲率和拓扑对膜流体动力学的影响
DOI：
10.1209/0295-5075/84/48001
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
A. Levine
中科院分区：
文献类型：
--
作者：
M. Henle;R. McGorty;A. Schofield;A. Dinsmore;A. Levine
我们研究的流动性的点状和扩展的对象（杆）在一个球形膜，以显示这些数量是如何修改在一个惊人的方式由膜的曲率和拓扑结构。我们还提出了理论计算和实验测量的膜流体速度场周围的移动棒绑定到拥挤的界面的油包水液滴。通过使用不同的液滴尺寸，膜的粘度，和杆的长度，我们表明，内部和外部流体之间的粘度不匹配导致抑制的小液滴，不能被捕获的平膜预测的流体流动。
We study the mobilities of point-like and extended objects (rods) on a spherical membrane to show how these quantities are modified in a striking manner by the curvature and topology of the membrane. We also present theoretical calculations and experimental measurements of the membrane fluid velocity field around a moving rod bound to the crowded interface of a water-in-oil droplet. By using different droplet sizes, membrane viscosities, and rod lengths, we show that the viscosity mismatch between the interior and exterior fluids leads to a suppression of the fluid flow on small droplets that cannot be captured by the flat-membrane predictions.