Structure transitions of polymer-mediated colloidal crystals

被引：2
|
作者：
Han, C. R. [1 ,2 ]
Cao, J. G. [1 ,2 ]
Zhou, L. W. [1 ,2 ]
Pang, X. C. [3 ]
Huang, J. L. [3 ]
Zhang, L. F. [1 ,2 ]
Huang, J. P. [1 ,2 ]
机构：
[1] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China
[2] Fudan Univ, Surface Phys Lab, Natl Key Lab, Shanghai 200433, Peoples R China
[3] Fudan Univ, Dept Macromol Sci, Key Lab Mol Engn Polymer, State Educ Minist China, Shanghai 200433, Peoples R China
来源：
PHYSICS LETTERS A | 2009年 / 373卷 / 35期
基金：
中国国家自然科学基金;
关键词：
Structures transitions; Colloidal crystals; Self-assembly; Band structures; PHOTONIC CRYSTALS; PHASE-BEHAVIOR; FABRICATION; MIXTURES; SPHERES; GROWTH; FILMS;
D O I：
10.1016/j.physleta.2009.06.050
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The self-assembled colloidal crystals with structure transitions were realized experimentally on substrates with polymer brushes. Such polymer-mediated colloidal crystals were found to experience a series of in-layer structure transitions including stable columnar, polycrystalline, mixed square-hexagonal, square, hexagonal structures when the mass ratio of colloidal particles to free polymers was adjusted from 0.125 to 10. Among these structures, a large area interfacial square structure was proved to be a body-centered tetragonal (BCT) structure in three dimensions in the polymer-mediated colloidal crystals. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：3174 / 3181
页数：8
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