Formation of a highly ordered colloidal microstructure upon flow cessation from high shear rates

被引：33

作者：

Butera, RJ

Wolfe, MS

Bender, J

Wagner, NJ

机构：

[1] DUPONT CO INC,EXPT STN,CR&D,WILMINGTON,DE 19898

[2] UNIV DELAWARE,DEPT CHEM ENGN,CTR MOL & ENGN THERMODYNAM,NEWARK,DE 19716

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.77.2117

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A model suspension of charged colloidal spheres exhibits anomalous modulus relaxations upon flow cessation from the shear-thickened state. Small angle neutron scattering (SANS) measurements indicate the development of a metastable crystalline state upon flow cessation from a disordered, shear-thickened state. The metastable state consists of a random stacking of tightly packed hcp planes of particles lying in the shear velocity-vorticity plane. These measurements suggest that the apparently disordered shear-thickened state may contain a high degree of latent order not apparent in the SANS measurements during flow.

引用

页码：2117 / 2120

页数：4

共 16 条

[1] SHEAR-INDUCED PARTIAL TRANSLATIONAL ORDERING OF A COLLOIDAL SOLID [J].