Drag coefficient of a liquid domain in a two-dimensional membrane

被引：24

作者：

Ramachandran, S. ^{[1
]}

Komura, S. ^{[1
]}

Imai, M. ^{[2
]}

Seki, K. ^{[3
]}

机构：

[1] Tokyo Metropolitan Univ, Grad Sch Sci & Engn, Dept Chem, Tokyo 1920397, Japan

[2] Ochanomizu Univ, Fac Sci, Dept Phys, Tokyo 1120012, Japan

[3] Natl Inst Adv Ind Sci & Technol, Tsukuba 3058565, Japan

来源：

EUROPEAN PHYSICAL JOURNAL E | 2010年 / 31卷 / 03期

关键词：

BROWNIAN-MOTION; MONOLAYER DOMAINS; ROTATIONAL DRAG; LIVING CELLS; DIFFUSION; DYNAMICS; HYDRODYNAMICS; RELAXATION; PROTEINS; BILAYER;

D O I：

10.1140/epje/i2010-10577-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Using a hydrodynamic theory that incorporates a momentum decay mechanism, we calculate the drag coefficient of a circular liquid domain of finite viscosity moving in a two-dimensional membrane. We derive an analytical expression for the drag coefficient which covers the whole range of domain sizes. Several limiting expressions are discussed. The obtained drag coefficient decreases as the domain viscosity becomes smaller with respect to the outer membrane viscosity. This is because the flow induced in the domain acts to transport the fluid in the surrounding matrix more efficiently.

引用

页码：303 / 310

页数：8

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