SHEAR ALIGNMENT AND INSTABILITY OF SMECTIC PHASES

被引:63
作者
GOULIAN, M
MILNER, ST
机构
[1] Exxon Research and Engineering Company, Annandale
关键词
D O I
10.1103/PhysRevLett.74.1775
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We consider the shear flow of well-aligned one-component smectic phases, such as thermotropic smectics and lamellar diblock copolymers, below the critical region. We show that, as a result of thermal fluctuations of the layers, parallel c alignment is generically unstable and perpendicular a alignment is stable against long-wavelength undulations. We also find, surprisingly, that both a and c alignments are stable for a narrow window of values for the anisotropic viscosity. © 1995 The American Physical Society.
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页码:1775 / 1778
页数:4
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