Abstract
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.
Original language | English (US) |
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Pages (from-to) | 1775-1778 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 74 |
Issue number | 10 |
DOIs | |
State | Published - 1995 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy