ANISOTROPY OF THE LINE TENSION AND BULK ELASTICITY IN 2-DIMENSIONAL DROPS OF A MESOPHASE

被引:44
作者
RIVIERE, S [1 ]
MEUNIER, J [1 ]
机构
[1] UNIV PARIS 07, F-75231 PARIS 05, FRANCE
关键词
D O I
10.1103/PhysRevLett.74.2495
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Using Brewster angle microscopy to study Langmuir monolayers of fatty acids at the air-water interface, we have observed a boojum pattern in two-dimensional drops of a tilted liquid condensed phase. In a boojum, the in-plane molecular orientation turns continuously and points with the same molecular orientation are located on straight lines, crossing at a defect point expelled from the drop. We have observed a distortion of the drops in the neighborhood of these points. We have studied the distortion of the drops and the distance of the defect point to the drop boundary, and deduced several ratios between elastic constants, anisotropic line tension, and elastic constants of the medium. © 1995 The American Physical Society.
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页码:2495 / 2498
页数:4
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