Vertically aligned liquid crystal mode on UV-cured reactive mesogen using imprinting method

Hak Moo Lee, Hyung Koo Chung, Hong Gyu Park, Dae-Shik Seo

Research output: Contribution to journalArticle

Abstract

We report a novel imprinting method employing an ultraviolet (UV) cured reactive mesogen (RM) hardened in a homeotropic orientation. During UV curing, selectively photopolymerized bonds were created and RM molecules were aligned vertically. Based on X-ray photoelectron spectroscopy (XPS) results, we confirmed than an increased atomic percentage of the alignment layer was made from the RM, which was UV cured using the imprinting method. The measurement of retardation showed the anisotropic nature of the imprinted substrates. Also, vertically aligned (VA) liquid crystal (LC) cells created by this imprinting method showed superior electro-optic (EO) properties as compared with the rubbing method.

Original languageEnglish
Pages (from-to)44-50
Number of pages7
JournalOptical Materials Express
Volume5
Issue number1
DOIs
Publication statusPublished - 2015 Jan 1

Fingerprint

Liquid Crystals
Electrooptical effects
Liquid crystals
Curing
X ray photoelectron spectroscopy
Molecules
Substrates

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

Cite this

Lee, Hak Moo ; Chung, Hyung Koo ; Park, Hong Gyu ; Seo, Dae-Shik. / Vertically aligned liquid crystal mode on UV-cured reactive mesogen using imprinting method. In: Optical Materials Express. 2015 ; Vol. 5, No. 1. pp. 44-50.
@article{d4c826c2885d4c58a5b0f254aad6ee9c,
title = "Vertically aligned liquid crystal mode on UV-cured reactive mesogen using imprinting method",
abstract = "We report a novel imprinting method employing an ultraviolet (UV) cured reactive mesogen (RM) hardened in a homeotropic orientation. During UV curing, selectively photopolymerized bonds were created and RM molecules were aligned vertically. Based on X-ray photoelectron spectroscopy (XPS) results, we confirmed than an increased atomic percentage of the alignment layer was made from the RM, which was UV cured using the imprinting method. The measurement of retardation showed the anisotropic nature of the imprinted substrates. Also, vertically aligned (VA) liquid crystal (LC) cells created by this imprinting method showed superior electro-optic (EO) properties as compared with the rubbing method.",
author = "Lee, {Hak Moo} and Chung, {Hyung Koo} and Park, {Hong Gyu} and Dae-Shik Seo",
year = "2015",
month = "1",
day = "1",
doi = "10.1364/OME.5.000044",
language = "English",
volume = "5",
pages = "44--50",
journal = "Optical Materials Express",
issn = "2159-3930",
publisher = "The Optical Society",
number = "1",

}

Vertically aligned liquid crystal mode on UV-cured reactive mesogen using imprinting method. / Lee, Hak Moo; Chung, Hyung Koo; Park, Hong Gyu; Seo, Dae-Shik.

In: Optical Materials Express, Vol. 5, No. 1, 01.01.2015, p. 44-50.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Vertically aligned liquid crystal mode on UV-cured reactive mesogen using imprinting method

AU - Lee, Hak Moo

AU - Chung, Hyung Koo

AU - Park, Hong Gyu

AU - Seo, Dae-Shik

PY - 2015/1/1

Y1 - 2015/1/1

N2 - We report a novel imprinting method employing an ultraviolet (UV) cured reactive mesogen (RM) hardened in a homeotropic orientation. During UV curing, selectively photopolymerized bonds were created and RM molecules were aligned vertically. Based on X-ray photoelectron spectroscopy (XPS) results, we confirmed than an increased atomic percentage of the alignment layer was made from the RM, which was UV cured using the imprinting method. The measurement of retardation showed the anisotropic nature of the imprinted substrates. Also, vertically aligned (VA) liquid crystal (LC) cells created by this imprinting method showed superior electro-optic (EO) properties as compared with the rubbing method.

AB - We report a novel imprinting method employing an ultraviolet (UV) cured reactive mesogen (RM) hardened in a homeotropic orientation. During UV curing, selectively photopolymerized bonds were created and RM molecules were aligned vertically. Based on X-ray photoelectron spectroscopy (XPS) results, we confirmed than an increased atomic percentage of the alignment layer was made from the RM, which was UV cured using the imprinting method. The measurement of retardation showed the anisotropic nature of the imprinted substrates. Also, vertically aligned (VA) liquid crystal (LC) cells created by this imprinting method showed superior electro-optic (EO) properties as compared with the rubbing method.

UR - http://www.scopus.com/inward/record.url?scp=84920953034&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84920953034&partnerID=8YFLogxK

U2 - 10.1364/OME.5.000044

DO - 10.1364/OME.5.000044

M3 - Article

AN - SCOPUS:84920953034

VL - 5

SP - 44

EP - 50

JO - Optical Materials Express

JF - Optical Materials Express

SN - 2159-3930

IS - 1

ER -