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Title: Improvement of the relaxation time and the order parameter of nematic liquid crystal using a hybrid alignment mixture of carbon nanotube and polyimide

Abstract

We examined the electrooptical properties of a nematic liquid crystal (LC) sample whose substrates were coated with a mixture of carbon nanotube (CNT) and polyimide (PI). The relaxation time of the sample coated with 1.5 wt. % CNT mixture was about 35% reduced compared to the pure polyimide sample. The elastic constant and the order parameter of the CNT-mixture sample were increased and the fast relaxation of LC could be approximated to the mean-field theory. We found the CNT-mixed polyimide formed more smooth surface than the pure PI from atomic force microscopy images, indicating the increased order parameter is related to the smooth surface topology of the CNT-polyimide mixture.

Authors:
; ;  [1]
  1. Advanced Electronics and Information Research Center, Division of Electronic Engineering, Chonbuk National University, Jeonju, Jeonbuk 561-756 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22280370
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 104; Journal Issue: 19; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ATOMIC FORCE MICROSCOPY; CARBON NANOTUBES; LIQUID CRYSTALS; MEAN-FIELD THEORY; ORDER PARAMETERS; RELAXATION TIME

Citation Formats

Lee, Hyojin, Yang, Seungbin, Lee, Ji-Hoon, Soo Park, Young, E-mail: irony@kctech.re.kr, and Korea Institute of Carbon Convergence Technology, Banryong-ro, Jeonju, Jeonbuk 561-844. Improvement of the relaxation time and the order parameter of nematic liquid crystal using a hybrid alignment mixture of carbon nanotube and polyimide. United States: N. p., 2014. Web. doi:10.1063/1.4875615.
Lee, Hyojin, Yang, Seungbin, Lee, Ji-Hoon, Soo Park, Young, E-mail: irony@kctech.re.kr, & Korea Institute of Carbon Convergence Technology, Banryong-ro, Jeonju, Jeonbuk 561-844. Improvement of the relaxation time and the order parameter of nematic liquid crystal using a hybrid alignment mixture of carbon nanotube and polyimide. United States. https://doi.org/10.1063/1.4875615
Lee, Hyojin, Yang, Seungbin, Lee, Ji-Hoon, Soo Park, Young, E-mail: irony@kctech.re.kr, and Korea Institute of Carbon Convergence Technology, Banryong-ro, Jeonju, Jeonbuk 561-844. 2014. "Improvement of the relaxation time and the order parameter of nematic liquid crystal using a hybrid alignment mixture of carbon nanotube and polyimide". United States. https://doi.org/10.1063/1.4875615.
@article{osti_22280370,
title = {Improvement of the relaxation time and the order parameter of nematic liquid crystal using a hybrid alignment mixture of carbon nanotube and polyimide},
author = {Lee, Hyojin and Yang, Seungbin and Lee, Ji-Hoon and Soo Park, Young, E-mail: irony@kctech.re.kr and Korea Institute of Carbon Convergence Technology, Banryong-ro, Jeonju, Jeonbuk 561-844},
abstractNote = {We examined the electrooptical properties of a nematic liquid crystal (LC) sample whose substrates were coated with a mixture of carbon nanotube (CNT) and polyimide (PI). The relaxation time of the sample coated with 1.5 wt. % CNT mixture was about 35% reduced compared to the pure polyimide sample. The elastic constant and the order parameter of the CNT-mixture sample were increased and the fast relaxation of LC could be approximated to the mean-field theory. We found the CNT-mixed polyimide formed more smooth surface than the pure PI from atomic force microscopy images, indicating the increased order parameter is related to the smooth surface topology of the CNT-polyimide mixture.},
doi = {10.1063/1.4875615},
url = {https://www.osti.gov/biblio/22280370}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 19,
volume = 104,
place = {United States},
year = {Mon May 12 00:00:00 EDT 2014},
month = {Mon May 12 00:00:00 EDT 2014}
}