Weak surface energy in nematic dispersions: Saturn ring defects and quadrupolar interactions

被引：133
作者：
Mondain-Monval, O
Dedieu, JC
Gulik-Krzywicki, T
Poulin, P
机构：
[1] CNRS, Ctr Rech Paul Pascal, F-33600 Pessac, France
[2] CNRS, CGM, F-91198 Gif Sur Yvette, France
来源：
EUROPEAN PHYSICAL JOURNAL B | 1999年 / 12卷 / 02期
关键词：
D O I：
10.1007/s100510050992
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The role of surface energy in the behavior of colloidal particles in liquid crystalline phases is investigated. When the surface energy dominates, a hedgehog defect is formed and: according to an electrostatic analogy, the distortions around the partitles exhibit a dipolar character. By contrast, for weaker anchoring, the configuration becomes quadrupolar as evidenced by the structure of latex clusters in lyotropic systems and the observation of defects reminiscent of Saturn rings in thermotropic systems.
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页码：167 / 170
页数：4
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