Liquid crystal formation in suspensions of hard rodlike colloidal particles: Direct observation of particle arrangement and self-ordering behavior

被引:107
作者
Maeda, H [1 ]
Maeda, Y [1 ]
机构
[1] AIST, Inst Biol Resources & Funct, Tsukuba, Ibaraki 3058566, Japan
关键词
D O I
10.1103/PhysRevLett.90.018303
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We successfully prepared monodisperse, hard rodlike colloidal particles with a wide range of length-to-width ratios (L/W). In their suspensions liquid crystals, or nematic (N) and smectic (Sm) phases, spontaneously appeared. The size of the particles made it possible to directly observe their arrangement and dynamics with an optical microscope. The phase behavior observed exhibited an I (isotropic)-Sm transition for L/W=3.5-8.0 and I-N-Sm transitions for L/W=10-35. In pre-Sm transition regions, lateral clustering of the particles and subsequent layering of the clusters were observed exactly.
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页数:4
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