Enhanced kinetics and free-volume universality in dense aggregating systems

被引：43

作者：

Fry, D

Sintes, T

Chakrabarti, A

Sorensen, CM

机构：

[1] Kansas State Univ, Dept Phys, Manhattan, KS 66506 USA

[2] Univ Illes Balears, Dept Fis, E-07071 Palma de Mallorca, Spain

[3] Univ Illes Balears, Inst Mediterraneo Estudios Avanzados, CSIC, E-07071 Palma de Mallorca, Spain

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 14期

基金：

美国国家航空航天局;

关键词：

D O I：

10.1103/PhysRevLett.89.148301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Aggregation kinetics and cluster-size distributions are studied with off-lattice, diffusion-limited cluster-cluster simulations. With increased cluster crowding (occurring at late times) as measured by the normalized free volume, Omega, both the kinetics speeds up and the size distribution broadens. The exponents characterizing each, z and lambda, respectively, are found to be universal functions of Omega. Moreover, the relation z=(1-lambda)(-1) continues to hold up to Omega=0 (the ideal gel point), implying mean-field kinetics still applies despite the crowding.

引用

页码：1 / 148301

页数：4

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