Coexistence of two colloidal crystals at the nematic-liquid-crystal-air interface.
Coexistence of two colloidal crystals at the nematic-liquid-crystal-air interface.
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两种胶体晶体在向列相-液晶-空气界面处共存。
DOI：
10.1103/physrevlett.98.057801
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发表时间：
2007
影响因子：
8.6
通讯作者：
O. Lavrentovich
中科院分区：
文献类型：
--
作者：
A. Nych;V. Pergamenshchik;U. Ognysta;B. Lev;V. Nazarenko;M. Škarabot;I. Muševič;O. Lavrentovich
甘油液滴在向列型液晶-空气界面形成两种不同的晶格--六边形和致密的准六边形--它们被能垒分开，可以共存。每个液滴周围的指向矢畸变形成弹性偶极子。两个晶格之间的第一阶转变是由通过这些偶极子的重定向的偶极子-偶极子排斥的减少驱动的。弹性-毛细吸引力对这两种晶格都是必不可少的。该效应具有多体起源。
Glycerol droplets at a nematic-liquid-crystal-air interface form two different lattices--hexagonal and dense quasihexagonal--which are separated by the energy barrier and can coexist. Director distortions around each droplet form an elastic dipole. The first order transition between the two lattices is driven by a reduction of the dipole-dipole repulsion through reorientation of these dipoles. The elastic-capillary attraction is essential for the both lattices. The effect has a many-body origin.