2D interactions and binary crystals of dipolar and quadrupolar nematic colloids
2D interactions and binary crystals of dipolar and quadrupolar nematic colloids
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DOI：
10.1103/physrevlett.100.217803
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发表时间：
2008-05-30
影响因子：
8.6
通讯作者：
Babic, D.
中科院分区：
文献类型：
--
作者：
Ognysta, U.;Nych, A.;Babic, D.
在这封信中，我们证明了对称性的偶极和四极胶体粒子之间的弹性相互作用的液晶导致一种新的品种的2D双“二元”胶体晶体，这还没有观察到在任何胶体系统。偶极-四极相互作用是高度各向异性的，并显示出幂律依赖时，粒子彼此接近沿着与几千k（B）T的顺序为4 μ m直径的胶体的对结合能的方向场。
In this Letter, we demonstrate that the symmetry of the elastic interaction between the dipolar and quadrupolar colloidal particles in the nematic liquid crystal leads to a novel variety of 2D nematic "binary'' colloidal crystals, which have not been observed in any colloidal system. The dipolar-quadrupolar interaction is highly anisotropic and shows a power-law dependence when the particles approach each other along the director field with a pair-binding energy of the order of several thousands of k(B)T for 4 mu m diameter colloids.