Force-induced desorption of 3-star polymers in two dimensions

被引：6

作者：

Bradly, C. J. ^{[1
]}

van Rensburg, E. J. Janse ^{[2
]}

Owczarek, A. L. ^{[1
]}

Whittington, S. G. ^{[3
]}

机构：

[1] Univ Melbourne, Sch Math & Stat, Melbourne, Vic 3010, Australia

[2] York Univ, Dept Math & Stat, Toronto, ON M3J 1P3, Canada

[3] Univ Toronto, Dept Chem, Toronto, ON M5S 3H6, Canada

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL | 2019年 / 52卷 / 31期

基金：

澳大利亚研究理事会; 加拿大自然科学与工程研究理事会;

关键词：

3-star polymer desorption; polymer adsorption; polymer phase diagram; Monte Carlo; polymer statistical mechanics; SELF-AVOIDING WALKS;

D O I：

10.1088/1751-8121/ab2af4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the phase diagram of a self-avoiding walk model of a 3-star polymer in two dimensions, adsorbing at a surface and being desorbed by the action of a force. We show rigorously that there are four phases: a free phase, a ballistic phase, an adsorbed phase and a mixed phase where part of the 3-star is adsorbed and part is ballistic. We use both rigorous arguments and Monte Carlo methods to map out the phase diagram, and investigate the location and nature of the phase transition boundaries. In two dimensions, only two of the anus can be fully adsorbed in the surface and this alters the phase diagram when compared to 3-stars in three dimensions.

引用

页数：13

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