7 papers
Transition to spatially periodic patterns in nematics under oscillatory shear flow: linear analysis
O. S. Tarasov, A. P. Krekhov, L. Kramer
We consider the orientational instabilities, both homogeneous and spatially periodic, developing in a nematic liquid crystal under rectilinear oscillatory Couette flow for director…
Crossover Between Flexoelectric Stripe Patterns and Electroconvection in Hybrid Aligned Nematics
V. A. Delev, A. P. Krekhov, L. Kramer
We report experimental and theoretical results on the flexoelectric instability and crossover between flexoelectric domains and electroconvection in a hybrid aligned nematic MBBA u…
Drifting Abnormal Rolls in Electroconvection of Hybrid Aligned Nematic
V. A. Delev, A. P. Krekhov
We report experimental and theoretical results on the conductive regime of electroconvection in hybrid aligned nematics. The drifting oblique/normal rolls below/above the Lifshitz…
Flexoelectric Instability in Nematic Liquid Crystal between Coaxial Cylinders
I. V. Kotov, M. V. Khazimullin, A. P. Krekhov
The stability of the equilibrium configurations of a nematic liquid crystal confined between two coaxial cylinders is analysed when a radial electric field is applied and the flexo…
Dynamics of Nematic Liquid Crystal under Oscillatory Flow: Influence of Surface Viscosity
I. Sh. Nasibullayev, A. P. Krekhov, M. V. Khazimullin
We analyse the influence of a surface viscosity on the orientational dynamics of a nematic liquid crystal subjected to an oscillatory Couette flow. Approximate analytical solutions…
Temperature Dependence of Anchoring Energy of MBBA on SiO-Evaporated Substrate
M. V. Khazimullin, A. P. Krekhov, Yu. A. Lebedev
The temperature behaviour of the anchoring energy of nematic liquid crystal MBBA at the substrates with oblique SiO evaporation and director orientation at the interface have been…