Discovering new ordered phases of block copolymers

被引：212
|
作者：
Bohbot-Raviv, Y [1 ]
Wang, ZG [1 ]
机构：
[1] CALTECH, Div Chem & Chem Engn, Pasadena, CA 91125 USA
来源：
PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 16期
关键词：
D O I：
10.1103/PhysRevLett.85.3428
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We propose a new and general method for discovering novel ordered phases of block copolymer melts. The method involves minimizing a free energy functional in an arbitrary unit cell with respect to the composition profile and the dimensions of the unit cell, without any prior assumption of the microphase symmetry. Varying the initial conditions allows to search for different stable and metastable structures. Application of this method to ABC star and linear triblock copolymers using an approximate free energy reveals new morphologies not yet observed in experiment.
引用
收藏
页码：3428 / 3431
页数：4
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