Stability of Nematic Liquid Crystals in Couette Flow
- 10 November 1975
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 35 (19) , 1283-1286
- https://doi.org/10.1103/physrevlett.35.1283
Abstract
We have studied the behavior of several nematics in Couette flow with homeotropic boundary conditions. When Leslie's viscosity , the director tumbles at a critical shear rate, . When a stable, stationary state is observed. When , the flow becomes cellular. We calculate and . Knowing , , the shear viscosity , and the Frank elastic constants, it is possible to deduce separately the Leslie viscosities and when .
Keywords
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