Peculiarities of light propagation in chiral liquid crystal cells in an external electric field

Aksenova, E. V.; Divinskii, B.B.; Karetnikov, A. A.; Karetnikov, N. A.; Kovshik, A. P.; Kryukov, E. V.; Романов, В. Г.

doi:10.1134/s1063776114010221

Cited by 2 publications

(5 citation statements)

References 35 publications

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“…This elastic torque is at its maximum in the area of the LC layer, where there is a maximum orientation gradient of the director, when the field is off. We can assume that this is why τ r decreases along with the distance from the boundary of the layer z [5].…”

Section: Resultsmentioning

confidence: 99%

“…The required LC layer thickness of 8 µm was set with the help of Teflon spacers. The space between the prisms was filled with the chiral liquid crystal mixture (previously used in works [4,5]) with the helical pitch P 0 = 32 µm that consisted of LC-1466 (NIOPIK) with the chiral dopant VIH-3 (Vilnius State University, Lithuania). The dielectric anisotropy ∆ε of LC-1466 was 11.7 for a frequency of 1 kHz.…”

Section: Methodsmentioning

confidence: 99%

“…• rotation of the director, studied in works [3][4][5], with the characteristics of other helical structures having different boundary conditions is of great scientific and practical interest. In this regard, the purpose of this work was to study light refraction in the layer of the plane-oriented, chiral liquid crystal (used in works [3][4][5]), in which the direction of the director on surfaces differs by 90…”

Section: Introductionmentioning

confidence: 99%

“…In this regard, the purpose of this work was to study light refraction in the layer of the plane-oriented, chiral liquid crystal (used in works [3][4][5]), in which the direction of the director on surfaces differs by 90…”

Section: Introductionmentioning

confidence: 99%

“…When the magnitude of the electric field exceeded the Fréedericksz threshold, refraction was disturbed -the ray passed through the layer. In works [3][4][5], the intensity of the transmitted light, the threshold voltage, and the cell transmission switch-on and switch-off time dependencies on the light angle of incidence were studied. Varying the angle of incidence allowed us to study the change in the local orientation of the LC director under the influence of an electric field with a smooth change of the depth of the ray penetration into the layer.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

The study of the local director orientation in chiral liquid crystals

Kraynyukov¹,

Karetnikov²,

Kovshik³

et al. 2015

Nanosist.: fiz. him. mat.

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The refraction of an extraordinary light wave in a layer of a chiral liquid crystal with the director rotated 90• has been studied. In this structure, if a light wave is incident on the surface of the liquid crystal at a large angle and the light passes through the whole layer, it refracts at the opposite boundary of the layer. The angular dependence of the light transmission through the liquid crystal layer has been researched. It has been demonstrated that the electric field changed the character of the refraction of the extraordinary wave and the light started to pass through the layer. The threshold voltage of the light transmission has been determined, as well as its dependence on the light incidence angle. The effect dynamics have been studied and the angular dependence of the light transmission decay time has been determined.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%