Electrooptical properties of carbon-nanotube-doped twisted nematic liquid crystal cell

Chi Yen Huang, Hung Chih Pan, Chia Ting Hsieh

Research output: Contribution to journalArticle

75 Citations (Scopus)

Abstract

We investigated the electrooptical properties of a carbon nanotube (CNT)-doped twisted nematic (TN) liquid crystal (LC) cell. Experimental results reveal that the doped CNTs influence the elastic constant of LC-CNT dispersion. Using a small amount of CNT dopant, the field-on response time of the LC cell is nearly invariant; the threshold voltage of the cell increases due to the increase in the elastic constant of LC-CNT dispersion. At a higher CNT concentration, the marked increase in the dielectric anisotropy of LC-CNT dispersion markedly decreases the field-on response time and threshold voltage of the LC cell. The field-off response time of this cell decreases with increasing CNT concentration due to the increase in elastic constant and the slight increase in viscosity of LC-CNT dispersion. The field-on and field-off response times of the LC cell are reduced simultaneously when the LC host is doped with a moderate amount of CNT dopant.

Original languageEnglish
Pages (from-to)6392-6394
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume45
Issue number8 A
DOIs
Publication statusPublished - 2006 Aug 4

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Nematic liquid crystals
Carbon nanotubes
Liquid crystals
carbon nanotubes
liquid crystals
cells
Elastic constants
elastic properties
Threshold voltage
threshold voltage
Doping (additives)
Viscosity of liquids
Anisotropy
viscosity
anisotropy

All Science Journal Classification (ASJC) codes

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

Cite this

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abstract = "We investigated the electrooptical properties of a carbon nanotube (CNT)-doped twisted nematic (TN) liquid crystal (LC) cell. Experimental results reveal that the doped CNTs influence the elastic constant of LC-CNT dispersion. Using a small amount of CNT dopant, the field-on response time of the LC cell is nearly invariant; the threshold voltage of the cell increases due to the increase in the elastic constant of LC-CNT dispersion. At a higher CNT concentration, the marked increase in the dielectric anisotropy of LC-CNT dispersion markedly decreases the field-on response time and threshold voltage of the LC cell. The field-off response time of this cell decreases with increasing CNT concentration due to the increase in elastic constant and the slight increase in viscosity of LC-CNT dispersion. The field-on and field-off response times of the LC cell are reduced simultaneously when the LC host is doped with a moderate amount of CNT dopant.",
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Electrooptical properties of carbon-nanotube-doped twisted nematic liquid crystal cell. / Huang, Chi Yen; Pan, Hung Chih; Hsieh, Chia Ting.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 45, No. 8 A, 04.08.2006, p. 6392-6394.

Research output: Contribution to journalArticle

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