Short-ranged attractive colloids: What is the gel state ?

被引：16

作者：

Zaccarelli, E ^{[1
]}

Sciortino, F ^{[1
]}

Buldyrev, SV ^{[1
]}

Tartaglia, P ^{[1
]}

机构：

[1] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

来源：

UNIFYING CONCEPTS IN GRANULAR MEDIA AND GLASSES | 2004年

关键词：

D O I：

10.1016/B978-044451607-7/50015-7

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

We evaluate thermodynamic, geometric and dynamic properties of a short-ranged square well binary mixture to provide a coherent picture of this simple, but rich, model for colloidal interactions. In particular, we compare the location, in the temperature-packing fraction plane, of the geometrical percolation locus, the metastable liquid-gas spinodal and the glass transition lines. Such comparison provides evidence that the gel-state can not be related to the attractive glass transition line directly. Indications are given for the possibility of an indirect link between the two, via an arrested phase separation process. We finally discuss the possibility that a spherical short range attraction may not be sufficient to produce an equilibrium cluster phase at low packing fraction and low temperatures.

引用

页码：181 / 194

页数：14

共 60 条

[51]

SEGWICK H, 2003, UNPUB

[52] Logarithmic relaxation in a colloidal system [J].

Sperl, M .

PHYSICAL REVIEW E, 2003, 68 (03) :13-314051

[53]

SPERL M, 2003, IN PRESS PHYS REV E

[54]

Vicsek T., 1989, FRACTAL GROWTH PHENO

[55] A colloidal model system with an interaction tunable from hard sphere to soft and dipolar [J].

Yethiraj, A ;

van Blaaderen, A .

NATURE, 2003, 421 (6922) :513-517

[56] Activated bond-breaking processes preempt the observation of a sharp glass-glass transition in dense short-ranged attractive colloids [J].

Zaccarelli, E ;

Foffi, G ;

Sciortino, F ;

Tartaglia, P .

PHYSICAL REVIEW LETTERS, 2003, 91 (10)

[57] Static and dynamical correlation functions behaviour in attractive colloidal systems from theory and simulation [J].

Zaccarelli, E ;

Foffi, G ;

Dawson, KA ;

Buldyrev, SV ;

Sciortino, F ;

Tartaglia, P .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2003, 15 (01) :S367-S374

[58] Confirmation of anomalous dynamical arrest in attractive colloids: A molecular dynamics study [J].

Zaccarelli, E ;

Foffi, G ;

Dawson, KA ;

Buldyrev, SV ;

Sciortino, F ;

Tartaglia, P .

PHYSICAL REVIEW E, 2002, 66 (04) :14

[59] Competition between crystallization and glassification for particles with short-ranged attraction. Possible applications to protein crystallization [J].

Zaccarelli, E ;

Sciortino, F ;

Tartaglia, P ;

Foffi, G ;

McCullagh, GD ;

Lawlor, A ;

Dawson, KA .

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 2002, 314 (1-4) :539-547

[60] Mechanical properties of a model of attractive colloidal solutions [J].

Zaccarelli, E ;

Foffi, G ;

Dawson, KA ;

Sciortino, F ;

Tartaglia, P .

PHYSICAL REVIEW E, 2001, 63 (03)

← 1 2 3 4 5 6 →