Phase behavior in thin films of cylinder-forming block copolymers

被引：470

作者：

Knoll, A

Horvat, A

Lyakhova, KS

Krausch, G

Sevink, GJA

Zvelindovsky, AV

Magerle, R

机构：

[1] Univ Bayreuth, D-95440 Bayreuth, Germany

[2] Leiden Univ, Leiden Inst Chem, NL-2300 RA Leiden, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.89.035501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have experimentally determined a phase diagram for cylinder-forming polystyrene-block-polybutadien-block-polystyrene triblock copolymer in thin films. The phase behavior can be modeled in great detail by dynamic density functional theory. Deviations from the bulk structure, such as wetting layer, perforated lamella, and lamella, are identified as surface reconstructions. Their stability regions are determined by an interplay between surface fields and confinement effects.

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页码：355011 / 355014

页数：4

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