Study on liquid crystal alignment characteristics by the surface treatment of hydrogenated amorphous carbon thin films

Dae Kyu Lee, Soon Joon Rho, Hong Koo Baik, Jeoung Yeon Hwang, Yong Min Jo, Dae-Shik Seo, Se Jong Lee, Kie Moon Song

Research output: Contribution to journalLetter

12 Citations (Scopus)

Abstract

Liquid crystal alignment characteristics were investigated using hydrogenated amorphous carbon (a-C:H) thin films. a-C:H thin films were deposited by a remote plasma-enhanced chemical vapor deposition (RPECVD) method using C2H2 and He gases. The surface property of a-C:H thin films was controlled by Ar ion beams. Ion beam irradiation results in the decrease of the optical band gap, the increase of the refractive index, and the increase of the P-base energy of a-C:H thin films. The liquid crystal alignment and pretilt angle were generated by ion beam irradiation. The pretilt angle was affected by the graphitization of a-C:H thin films and the P-base energy of a-C:H thin films.

Original languageEnglish
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume41
Issue number12 A
Publication statusPublished - 2002 Dec 1

Fingerprint

Carbon films
Amorphous carbon
surface treatment
Liquid crystals
Surface treatment
liquid crystals
alignment
Thin films
carbon
thin films
Ion beams
ion beams
Irradiation
Graphitization
irradiation
graphitization
Optical band gaps
Plasma enhanced chemical vapor deposition
surface properties
Surface properties

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

@article{b35db0504f70489aa972fd6c938b6f78,
title = "Study on liquid crystal alignment characteristics by the surface treatment of hydrogenated amorphous carbon thin films",
abstract = "Liquid crystal alignment characteristics were investigated using hydrogenated amorphous carbon (a-C:H) thin films. a-C:H thin films were deposited by a remote plasma-enhanced chemical vapor deposition (RPECVD) method using C2H2 and He gases. The surface property of a-C:H thin films was controlled by Ar ion beams. Ion beam irradiation results in the decrease of the optical band gap, the increase of the refractive index, and the increase of the P-base energy of a-C:H thin films. The liquid crystal alignment and pretilt angle were generated by ion beam irradiation. The pretilt angle was affected by the graphitization of a-C:H thin films and the P-base energy of a-C:H thin films.",
author = "Lee, {Dae Kyu} and Rho, {Soon Joon} and Baik, {Hong Koo} and Hwang, {Jeoung Yeon} and Jo, {Yong Min} and Dae-Shik Seo and Lee, {Se Jong} and Song, {Kie Moon}",
year = "2002",
month = "12",
day = "1",
language = "English",
volume = "41",
journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",
issn = "0021-4922",
publisher = "Japan Society of Applied Physics",
number = "12 A",

}

Study on liquid crystal alignment characteristics by the surface treatment of hydrogenated amorphous carbon thin films. / Lee, Dae Kyu; Rho, Soon Joon; Baik, Hong Koo; Hwang, Jeoung Yeon; Jo, Yong Min; Seo, Dae-Shik; Lee, Se Jong; Song, Kie Moon.

In: Japanese Journal of Applied Physics, Part 2: Letters, Vol. 41, No. 12 A, 01.12.2002.

Research output: Contribution to journalLetter

TY - JOUR

T1 - Study on liquid crystal alignment characteristics by the surface treatment of hydrogenated amorphous carbon thin films

AU - Lee, Dae Kyu

AU - Rho, Soon Joon

AU - Baik, Hong Koo

AU - Hwang, Jeoung Yeon

AU - Jo, Yong Min

AU - Seo, Dae-Shik

AU - Lee, Se Jong

AU - Song, Kie Moon

PY - 2002/12/1

Y1 - 2002/12/1

N2 - Liquid crystal alignment characteristics were investigated using hydrogenated amorphous carbon (a-C:H) thin films. a-C:H thin films were deposited by a remote plasma-enhanced chemical vapor deposition (RPECVD) method using C2H2 and He gases. The surface property of a-C:H thin films was controlled by Ar ion beams. Ion beam irradiation results in the decrease of the optical band gap, the increase of the refractive index, and the increase of the P-base energy of a-C:H thin films. The liquid crystal alignment and pretilt angle were generated by ion beam irradiation. The pretilt angle was affected by the graphitization of a-C:H thin films and the P-base energy of a-C:H thin films.

AB - Liquid crystal alignment characteristics were investigated using hydrogenated amorphous carbon (a-C:H) thin films. a-C:H thin films were deposited by a remote plasma-enhanced chemical vapor deposition (RPECVD) method using C2H2 and He gases. The surface property of a-C:H thin films was controlled by Ar ion beams. Ion beam irradiation results in the decrease of the optical band gap, the increase of the refractive index, and the increase of the P-base energy of a-C:H thin films. The liquid crystal alignment and pretilt angle were generated by ion beam irradiation. The pretilt angle was affected by the graphitization of a-C:H thin films and the P-base energy of a-C:H thin films.

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M3 - Letter

VL - 41

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

SN - 0021-4922

IS - 12 A

ER -