Electro-optic characteristics of chiral nematic layers deformed by in-plane electric field

被引：1

作者：

Buczkowska, Mariola ^{[1
]}

机构：

[1] Lodz Univ Technol, Inst Phys, Lodz, Poland

来源：

LIQUID CRYSTALS | 2024年 / 51卷 / 07期

关键词：

Nematics; in-plane electric field; director deformations; twisted nematics; super twisted nematics; LIQUID-CRYSTAL; DEFORMATIONS;

D O I：

10.1080/02678292.2024.2345209

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Deformations of twisted and super-twisted layers composed of chiral and nonchiral nematic liquid crystals induced by in-plane electric field were studied numerically. The right-hand twisted structures with twist angles equal to 90 degrees, 120 degrees, 150 degrees, 180 degrees, 210 degrees, 240 degrees and 270 degrees placed between crossed polarisers were considered. The optical transmission due to electro-optic effect which occurred in such systems was studied as a function of applied electric field strength. Steep and linear electro-optic characteristics were found in the case of nonchiral nematic confined in cells twisted by 90 degrees. Such characteristics were favoured by large twist elastic constant, large dielectric anisotropy and weak azimuthal anchoring. In the case of super-twisted layers, useful characteristics were found for twist angles 210 degrees, 240 degrees and 270 degrees, small twist elastic constant, strong azimuthal anchoring and large dielectric anisotropy.

引用

页码：1181 / 1187

页数：7

共 13 条

[1] Spatially periodic deformations in planar and twisted flexoelectric nematic layers [J].

Buczkowska, M. ;

Derfel, G. .

PHYSICAL REVIEW E, 2017, 95 (06)

[2] Flexoelectro-optic properties of chiral nematic liquid crystals in the uniform standing helix configuration [J].

Castles, F. ;

Morris, S. M. ;

Coles, H. J. .

PHYSICAL REVIEW E, 2009, 80 (03)

[3] EFFECT OF WEAK ANCHORING ON THE ELECTRIC-FIELD-INDUCED DEFORMATIONS OF NEMATIC LAYERS [J].

DERFEL, G .

LIQUID CRYSTALS, 1994, 17 (03) :429-436

[4] ONE-DIMENSIONAL DIELECTRIC-FLEXOELECTRIC DEFORMATIONS IN NEMATIC LAYERS [J].

DERZHANSKI, A ;

PETROV, AG ;

MITOV, MD .

JOURNAL DE PHYSIQUE, 1978, 39 (03) :273-285

[5] Study on colour characteristics depending on orientation of liquid crystal in the in-plane switching mode [J].

Jung, Byoung Sun ;

Baik, In Su ;

Song, Ii Sub ;

Lee, Gi-Dong ;

Lee, Seung Hee .

LIQUID CRYSTALS, 2006, 33 (09) :1077-1082

[6] Magnetic-field-induced periodic deformations in planar nematic layers [J].

Krzyzanski, D ;

Derfel, G .

PHYSICAL REVIEW E, 2000, 61 (06) :6663-6668

[7]

Masahito Oh-E., 1997, LIQ CRYST, V22, P379, DOI [10.1080/026782997209090, DOI 10.1080/026782997209090]

[8]

Oh-e M., 2001, LIQ CRYST TODAY, V10, P6, DOI [10.1080/14645180110074800, DOI 10.1080/14645180110074800]

[9] Electro-optical characteristics of twisted nematic liquid crystal device based upon in-plane switching [J].

Oka, S ;

Kimura, M ;

Akahane, T ;

Toko, Y .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 2004, 410 :839-845

[10] Electro-optical characteristics and switching behavior of a twisted nematic liquid crystal device based upon in-plane switching [J].

Oka, S ;

Kimura, M ;

Akahane, T .

APPLIED PHYSICS LETTERS, 2002, 80 (10) :1847-1849

← 1 2 →