Formation of Stripe Patterns in Charged Colloids during Unidirectional Crystallization in the Presence of Impurity Particles

被引：2
|
作者：
Yoshizawa, Koki [1 ]
Onda, Sachiko [1 ]
Sawada, Tsutomu [2 ]
Yamanaka, Junpei [1 ]
机构：
[1] Nagoya City Univ, Grad Sch Pharmaceut Sci, Mizuho Ku, Nagoya, Aichi 4678603, Japan
[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan
来源：
CHEMISTRY LETTERS | 2012年 / 41卷 / 03期
关键词：
DIFFUSION; CRYSTALS; SILICA; BASE; GROWTH;
D O I：
10.1246/cl.2012.322
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We examine the spatial distributions of fluorescent-labeled polystyrene (PS) particles added to colloidal silica that resulted after unidirectional crystal growth due to diffusion of pyridine. We find that the PS particles are arranged in a stripe pattern with a submillimeter-sized spacing. The patterning mechanism is attributable to the formation of lamella-shaped crystal grains and exclusion of the PS particles to the crystal grain boundaries.
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页码：322 / 324
页数：3
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