Electrooptical Properties of Single-Walled Carbon-Nanotube Mixed Liquid-Crystal Cells With Rubbed and Ion-Beam-Treated Alignment Layers

Author

Park, Hong-Gyu ; Jeong, Hae-Yun ; Kim, Young-Hwan ; Kim, Byoung-Yong ; Kim, Jeong-Hwan ; Yoon, Hongil ; Seo, Dae-Shik

Author_Institution

Dept. of Electr. & Eng., Yonsei Univ., Seoul, South Korea

Volume

7

Issue

12

fYear

2011

Firstpage

644

Lastpage

648

Abstract

The electrooptical properties of single-walled carbon-nanotube (SWCNT) mixed liquid-crystal (LC) cells fabricated by rubbing and ion-beam (IB) process are investigated. The increase of SWCNT concentration in the LC mixture led to a decrease in the threshold voltage of twisted nematic cells by reducing the screening effect. Threshold voltages of 1.3 and 1.7 V are lowered to 0.8 and 1.2 V, respectively, with SWCNT mixtures up to 10×10^-3 wt%. LC alignment characteristics including LC orientation state, transmittance spectra, pretilt angle, and thermal stability of LC cells are also observed.

Keywords

abrasion; carbon nanotubes; electro-optical effects; ion beam effects; nematic liquid crystals; thermal stability; C; electrooptical properties; ion-beam-treated alignment layers; orientation state; pretilt angle; rubbed alignment layers; screening effect; single-walled carbon-nanotube mixed liquid-crystal cells; thermal stability; threshold voltage; transmittance spectra; twisted nematic cells; voltage 1.3 V; voltage 1.7 V; Carbon nanotubes; Educational institutions; Electrooptical waveguides; Liquid crystals; Thermal stability; Threshold voltage; Electrooptical property; ion-beam (IB) process; liquid crystals (LCs); rubbing process; single-walled carbon-nanotube (SWNT);

fLanguage

English

Journal_Title

Display Technology, Journal of

Publisher

ieee

ISSN

1551-319X

Type

jour

DOI

10.1109/JDT.2011.2160841

Filename

6051729