Preparation of movable 3D periodic structures of silica spheres

被引：0
|
作者：
Li W.-J. [1 ,2 ]
Fu T. [1 ,2 ]
机构：
[1] Joint Research Center of Photonics of Royal Institute of Technology and Zhejiang University
[2] Centre for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical Instrumentation, Zhejiang University
来源：
Journal of Zhejiang University: Science | 2006年 / 7卷 / SUPPL. 2期
关键词：
Colloidal; Silica spheres; Three-dimensional;
D O I：
10.1631/jzus.2006.AS0345
中图分类号：
学科分类号：
摘要：
Monodispersed silica spheres were prepared by hydrolysis of tetraethyl orthosilicate (TEOS) in the presence of water and ammonia in ethanol medium. The net negative charge on the surface of SiO2 spheres was enhanced after ageing silica spheres under suitable condition. Thus, a novel viscous liquid composed of mono-dispersed silica spheres was obtained. Due to the existing net repulsive forces between particles, the viscous liquid can quickly form a movable 3D periodic ordered structure with vivid color, indicating a high degree of ordering of the particles.
引用
收藏
页码：345 / 349
页数：4
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