Characteristic periodic motion of polymers in shear flow

被引：206

作者：

Schroeder, CM

Teixeira, RE

Shaqfeh, ESG

Chu, S

机构：

[1] Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA

[2] Stanford Univ, Dept Chem & Mech Engn, Stanford, CA 94305 USA

[3] Stanford Univ, Dept Phys & Appl Phys, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.95.018301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The motion of both free and tethered polymer molecules as well as rigid Brownian rods in unbound shear flow is found to be characterized by a clear periodicity or tumbling frequency. Periodicity is shown using a combination of single molecule DNA experiments and computer simulations. In all cases, we develop scaling laws for this behavior and demonstrate that the frequency of characteristic periodic motion scales sublinearly with flow rate.

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页数：4

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