Pillar-Assisted Epitaxial Assembly of Toric Focal Conic Domains of Smectic-A Liquid Crystals

被引：52
|
作者：
Honglawan, Apiradee [2 ]
Beller, Daniel A. [1 ]
Cavallaro, Marcello [2 ]
Kamien, Randall D. [1 ]
Stebe, Kathleen J. [2 ]
Yang, Shu [2 ,3 ]
机构：
[1] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA
[2] Univ Penn, Dept Chem & Biomol Engn, Philadelphia, PA 19104 USA
[3] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA
来源：
ADVANCED MATERIALS | 2011年 / 23卷 / 46期
基金：
美国国家科学基金会;
关键词：
hierarchical structures; pillar assisted assembly; epitaxial assembly; liquid crystals; BLOCK-COPOLYMERS; GRAPHOEPITAXY; PHASE;
D O I：
10.1002/adma.201103008
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
SU-8 pillar-assisted epitaxial assembly of toric focal conic domains (TFCDs) arrays of smectic-A liquid crystals is studied. The 3D nature of the pillar array is crucial to confine and direct the formation of TFCDs on the top of each pillar and between neighboring pillars, leading to highly ordered square and hexagonal array TFCDs. Excellent agreement between the experimentally obtained critical pillar diameter and elasticity calculation is found.
引用
收藏
页码：5519 / +
页数：6
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