Elastic flow instability in nanotube suspensions

被引：149

作者：

Lin-Gibson, S

Pathak, JA

Grulke, EA

Wang, H

Hobbie, EK ^{[1
]}

机构：

[1] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA

[2] Univ Kentucky, Dept Chem Engn, Lexington, KY 40506 USA

[3] Michigan Technol Univ, Dept Mat Sci & Engn, Houghton, MI 49931 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.92.048302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report an elastic instability associated with flow-induced clustering in semidilute non-Brownian colloidal nanotubes. Rheo-optical measurements are compared with simulations of mechanical flocculation in sheared fiber suspensions, and the evolving structure is characterized as a function of confinement and shear stress. The transient rheology is correlated with the evolution of highly elastic vorticity-aligned aggregates, with the underlying instability being somewhat ubiquitous in complex fluids.

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页数：4

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