Mechanisms of ordering in striped patterns

被引：329

作者：

Harrison, C ^{[1
]}

Adamson, DH

Cheng, ZD

Sebastian, JM

Sethuraman, S

Huse, DA

Chaikin, PM

机构：

[1] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[2] Princeton Univ, Princeton Mat Inst, Princeton, NJ 08544 USA

[3] Princeton Univ, Dept Chem Engn, Princeton, NJ 08544 USA

[4] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

来源：

SCIENCE | 2000年 / 290卷 / 5496期

关键词：

D O I：

10.1126/science.290.5496.1558

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We have studied the ordering dynamics of the striped patterns of a single layer of cylindrical block copolymer microdomains in a thin film. By tracking disclinations during annealing with time-lapse atomic force microscopy, we observe a dominant mechanism of disclination annihilation involving three or four disclinations (quadrupoles). Pairwise disclination annihilation events are suppressed as a result of the topological constraints in this system. The kinetic scaling laws with exponents observed here are consistent with topologically allowed annihilation events involving multiple disclinations. The results provide insight into two-dimensional pattern formation and may lead to the successful application of block copolymer lithography.

引用

页码：1558 / 1560

页数：3

共 27 条

[1] Interaction strengths in styrene-diene block copolymers and their hydrogenated derivatives [J].