Alignment of hexatic langmuir monolayers under shear.
Alignment of hexatic langmuir monolayers under shear.
复制标题
剪切下六角朗缪尔单层的排列。
DOI：
10.1103/physrevlett.85.1476
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发表时间：
2000
影响因子：
8.6
通讯作者：
D. K. Schwartz
中科院分区：
文献类型：
--
作者：
J. Ignés;D. K. Schwartz
我们已经研究了结构的变化，脂肪酸单分子膜在Ov相进行时，施加一个简单的剪切流。通过使用布鲁斯特角显微镜观察到的结构域结构的变化揭示了强耦合，表明剪切对齐的可能性。取向对分子极性倾斜的依赖性证明了该机制不同于双折射液晶。我们认为，基本的伪六方晶格的退化晶格对称线在流动方向上对齐，我们解释了观察到的对齐角度使用几何参数。
We have studied the structural changes that fatty acid monolayers in the Ov phase undergo when a simple shear flow is imposed. A strong coupling is revealed by the changes in domain structure that are observable using Brewster angle microscopy, suggesting the possibility of shear alignment. The dependence of the alignment on the molecular polar tilt proves that the mechanism is different than in nematic liquid crystals. We argue that the degenerate lattice symmetry lines of the underlying pseudohexagonal lattice align in the flow direction, and we explain the observed alignment angle using geometrical arguments.