Levine Alex J, Liverpool T B, MacKintosh F C
The Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106, USA.
Phys Rev Lett. 2004 Jul 16;93(3):038102. doi: 10.1103/PhysRevLett.93.038102. Epub 2004 Jul 15.
We study the dynamics of extended rodlike bodies in (or associated with) membranes and films. We demonstrate a striking difference between the mobilities in films and bulk fluids, even when the dissipation is dominated by the fluid stress: For large inclusions, we find that rotation and motion perpendicular to the rod axis exhibit purely local drag, in which the drag coefficient is algebraic in the rod dimensions. We also study the dynamics of the internal modes of a semiflexible inclusion and find two dynamical regimes in the relaxation spectrum.
我们研究了膜和薄膜中（或与之相关的）细长杆状物体的动力学。我们证明了薄膜和本体流体中迁移率之间存在显著差异，即使耗散主要由流体应力主导：对于大的内含物，我们发现垂直于杆轴的旋转和运动表现出纯粹的局部阻力，其中阻力系数在杆的尺寸上是代数关系。我们还研究了半柔性内含物内部模式的动力学，并在弛豫谱中发现了两种动力学状态。
