MARTENSITIC TRANSITION IN A CONFINED COLLOIDAL SUSPENSION

被引:76
|
作者
WEISS, JA [1 ]
OXTOBY, DW [1 ]
GRIER, DG [1 ]
MURRAY, CA [1 ]
机构
[1] AT&T BELL LABS,MURRAY HILL,NJ 07974
来源
JOURNAL OF CHEMICAL PHYSICS | 1995年 / 103卷 / 03期
关键词
D O I
10.1063/1.469828
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
We describe a nonequilibrium phase transition in a geometrically confined charge-stabilized colloidal suspension. The equilibrium configuration for the spheres in this system is a two-layer square lattice, equivalent to two layers of a body-centered cubic (bcc) crystal. After electrophoretic shear melting, the suspension rapidly crystallizes to a buckled single-layer triangular lattice. This well-ordered solid phase subsequently undergoes a martensitic phase transition back to the two-layer square lattice. We use high resolution digital video microscopy to follow the emergence and evolution of order during these phase transitions. (C) 1995 American Institute of Physics.
引用
收藏
页码:1180 / 1190
页数:11
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