Dielectric anisotropy effects on pretilt angle generation for nematic liquid crystals on a polymer layer

Dae Shik Seo; Jeoung Yeon Hwang; Sang Keuk Lee; Seung Hee Lee; Seung Kwon Paek

doi:10.1080/15421400490439923

Dielectric anisotropy effects on pretilt angle generation for nematic liquid crystals on a polymer layer

Dae Shik Seo, Jeoung Yeon Hwang, Sang Keuk Lee, Seung Hee Lee, Seung Kwon Paek

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

Generation of the pretilt angle in nematic liquid crystal (NLC) with negative dielectric anisotropy and cyano (CN) mixtures on a rubbed polyimide (PI) surface was studied. The pretilt angle of negative type NLC generated was larger than that of the positive type NLC on the rubbed PI surface for homogeneous alignment. However, the pretilt angle of negative type NLC generated was lower than that of the positive type NLC on the rubbed PI surface for homeotropic alignment. The different mechanisms of LC pretilt angle for homeotropic and homogeneous alignment can be observed. The pretilt angle increases with cyano content on the rubbed PI surface for homogeneous alignment and then saturates with further addition.

Original language	English
Pages (from-to)	277/[1887]-283/[1893]
Journal	Molecular Crystals and Liquid Crystals
Volume	412
DOIs	https://doi.org/10.1080/15421400490439923
Publication status	Published - 2004
Event	Proceedings of the 19th International Liquid Crystal Conference, ILCC2002 - Edinburgh, United Kingdom Duration: 2002 Jun 30 → 2002 Jul 5

Bibliographical note

Funding Information:
Keywords: cyano LC; homeotropic alignment; negative dielectric anisotropy; nematic liquid crystal (NLC); pretilt angle This work was supported by National Research Laboratory program (M1-0203-00-0008). Address correspondence to Dae-Shik Seo, Dept. of Electrical and Electronic Engineering (C-724), College of Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul 120-749, Korea.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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title = "Dielectric anisotropy effects on pretilt angle generation for nematic liquid crystals on a polymer layer",

abstract = "Generation of the pretilt angle in nematic liquid crystal (NLC) with negative dielectric anisotropy and cyano (CN) mixtures on a rubbed polyimide (PI) surface was studied. The pretilt angle of negative type NLC generated was larger than that of the positive type NLC on the rubbed PI surface for homogeneous alignment. However, the pretilt angle of negative type NLC generated was lower than that of the positive type NLC on the rubbed PI surface for homeotropic alignment. The different mechanisms of LC pretilt angle for homeotropic and homogeneous alignment can be observed. The pretilt angle increases with cyano content on the rubbed PI surface for homogeneous alignment and then saturates with further addition.",

author = "Seo, {Dae Shik} and Hwang, {Jeoung Yeon} and Lee, {Sang Keuk} and Lee, {Seung Hee} and Paek, {Seung Kwon}",

note = "Funding Information: Keywords: cyano LC; homeotropic alignment; negative dielectric anisotropy; nematic liquid crystal (NLC); pretilt angle This work was supported by National Research Laboratory program (M1-0203-00-0008). Address correspondence to Dae-Shik Seo, Dept. of Electrical and Electronic Engineering (C-724), College of Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul 120-749, Korea.; Proceedings of the 19th International Liquid Crystal Conference, ILCC2002 ; Conference date: 30-06-2002 Through 05-07-2002",

year = "2004",

doi = "10.1080/15421400490439923",

language = "English",

volume = "412",

pages = "277/[1887]--283/[1893]",

journal = "Molecular Crystals and Liquid Crystals",

issn = "1542-1406",

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T1 - Dielectric anisotropy effects on pretilt angle generation for nematic liquid crystals on a polymer layer

AU - Seo, Dae Shik

AU - Hwang, Jeoung Yeon

AU - Lee, Sang Keuk

AU - Lee, Seung Hee

AU - Paek, Seung Kwon

N1 - Funding Information: Keywords: cyano LC; homeotropic alignment; negative dielectric anisotropy; nematic liquid crystal (NLC); pretilt angle This work was supported by National Research Laboratory program (M1-0203-00-0008). Address correspondence to Dae-Shik Seo, Dept. of Electrical and Electronic Engineering (C-724), College of Engineering, Yonsei University, 134 Shinchon-dong, Seodaemoon-ku, Seoul 120-749, Korea.

PY - 2004

Y1 - 2004

N2 - Generation of the pretilt angle in nematic liquid crystal (NLC) with negative dielectric anisotropy and cyano (CN) mixtures on a rubbed polyimide (PI) surface was studied. The pretilt angle of negative type NLC generated was larger than that of the positive type NLC on the rubbed PI surface for homogeneous alignment. However, the pretilt angle of negative type NLC generated was lower than that of the positive type NLC on the rubbed PI surface for homeotropic alignment. The different mechanisms of LC pretilt angle for homeotropic and homogeneous alignment can be observed. The pretilt angle increases with cyano content on the rubbed PI surface for homogeneous alignment and then saturates with further addition.

AB - Generation of the pretilt angle in nematic liquid crystal (NLC) with negative dielectric anisotropy and cyano (CN) mixtures on a rubbed polyimide (PI) surface was studied. The pretilt angle of negative type NLC generated was larger than that of the positive type NLC on the rubbed PI surface for homogeneous alignment. However, the pretilt angle of negative type NLC generated was lower than that of the positive type NLC on the rubbed PI surface for homeotropic alignment. The different mechanisms of LC pretilt angle for homeotropic and homogeneous alignment can be observed. The pretilt angle increases with cyano content on the rubbed PI surface for homogeneous alignment and then saturates with further addition.

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U2 - 10.1080/15421400490439923

DO - 10.1080/15421400490439923

M3 - Conference article

AN - SCOPUS:12844253146

SN - 1542-1406

VL - 412

SP - 277/[1887]-283/[1893]

JO - Molecular Crystals and Liquid Crystals

JF - Molecular Crystals and Liquid Crystals

T2 - Proceedings of the 19th International Liquid Crystal Conference, ILCC2002

Y2 - 30 June 2002 through 5 July 2002

ER -

Dielectric anisotropy effects on pretilt angle generation for nematic liquid crystals on a polymer layer

Abstract

Bibliographical note

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