CHIRAL SYMMETRY-BREAKING IN LANGMUIR MONOLAYERS AND SMECTIC FILMS

被引:159
作者
SELINGER, JV
WANG, ZG
BRUINSMA, RF
KNOBLER, CM
机构
[1] CALTECH, DEPT CHEM ENGN, PASADENA, CA 91125 USA
[2] UNIV CALIF LOS ANGELES, DEPT CHEM, LOS ANGELES, CA 90024 USA
关键词
D O I
10.1103/PhysRevLett.70.1139
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Langmuir monolayers and freely suspended smectic films can exhibit a spontaneous breaking of chiral symmetry. The order parameter that characterizes this symmetry breaking is coupled to variations in the direction of molecular tilt. As a result, chiral symmetry breaking leads to the spontaneous formation of complex equilibrium patterns with either 1D or 2D modulations in the direction of molecular tilt. A Landau theory for this pattern formation gives a general phase diagram, which includes a uniform non-chiral phase, a striped pattern, a square lattice, and a uniform chiral phase.
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收藏
页码:1139 / 1142
页数:4
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