PHASE-SEPARATION IN BINARY NEARLY-HARD-SPHERE COLLOIDS - EVIDENCE FOR THE DEPLETION FORCE

被引：86

作者：

SANYAL, S

EASWAR, N

RAMASWAMY, S

SOOD, AK

机构：

[1] INDIAN INST SCI,CTR THEORET STUDIES,BANGALORE 560012,KARNATAKA,INDIA

[2] SMITH COLL,NORTHAMPTON,MA 01063

来源：

EUROPHYSICS LETTERS | 1992年 / 18卷 / 2BIS期

关键词：

STATISTICAL MECHANICS; PHASE EQUILIBRIA; PHASE TRANSITIONS; AND CRITICAL POINTS; COLLOIDS;

D O I：

10.1209/0295-5075/18/2/003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A binary aqueous suspension of large (L) and small (S) nearly-hard-sphere colloidal polystyrene spheres is shown to segregate spontaneously into L-rich and S-rich regions for suitable choices of volume fraction and size ratio. This is the first observation of such purely entropic phase separation of chemically identical species in which at least one component remains fluid. Simple theoretical arguments are presented to make this effect plausible.

引用

页码：107 / 110

页数：4

共 16 条

[1] INTERACTION BETWEEN PARTICLES SUSPENDED IN SOLUTIONS OF MACROMOLECULES [J].