A. V. Zakharov

Dynamic and dielectric properties of liquid crystals

The structural properties, static ɛj and relaxation ɛj(ω) permittivities (j=∥, ⊥), time correlation functions Φi01(t) (i=0, 1) and Φ002(t), and orientational relaxation times τi01(t) (i=0, 1) of 4-n-pentyl-4′-cyano-biphenyl (5CB) molecules in the nematic phase are investigated in the framework of the statistical-mechanical theory and the molecular dynamics method. The permittivities ɛj are calculated within a statistical-mechanical approach with the inclusion of translational, orientational, and mixed correlations in the description of the anisotropic systems. The time correlation functions Φi01(t) and Φ002(t) and the orientational relaxation times τi01(t) of 5CB molecules are calculated using the molecular dynamics method for liquid-crystal systems simulated by realistic intramolecular and intermolecular atom-atom interactions. The results of calculations and the experimental data for 5CB are in good agreement.

Elastic properties of liquid crystals

The structural and elastic properties of 4-n′-pentyl-4′-cyanobiphenyl (5CB) in the nematic liquid-crystal phase are investigated in the framework of the statistical-mechanical theory and the molecular dynamics method.

Reorientation dynamics of nematics encapsulated in microscopic volumes in a strong electric field

We theoretically describe a new regime of reorientation of the director field

Effect of a bounding surface on the rotational viscosity of liquid crystals

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Orientational nematodynamics of a compressible hybrid liquid-crystal cell

n^ and velocity v of a nematic liquid crystal (LC) encapsulated in a rectangular cell under the action of strong electric field E directed at angle α (~π/2) to the horizontal surfaces bounding the LC cell. The numerical calculations in the framework of nonlinear generalization of the classical Eriksen–Leslie theory showed that at certain relations between the torques and momenta affecting the unit LC volume and E ≫ Eth, transition periodic structures can arise during reorientation of

The effect of surface roughness of a solid substrate on its wetting by a smectic- A structure in the nematic phase of a liquid crystal

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