Electrooptical Properties of Carbon-Nanotube-Doped Twisted Nematic Liquid Crystal Cell
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概要
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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.
- 2006-08-15
著者
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Huang Chi-Yen
Graduate Institute of Photonics and Department of Physics, National Changhua University of Education, Changhua, Taiwan 500, Republic of China
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Hsieh Chia-Ting
Graduate Institute of Photonics and Department of Physics, National Changhua University of Education, Changhua, Taiwan 500, Republic of China
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Hsieh Chia-Ting
Graduate Institute of Photonics, National Changhua University of Education, Changhua, Taiwan, 500, Republic of China
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Pan Hung-Chih
Graduate Institute of Photonics, National Changhua University of Education, Changhua, Taiwan, 500, Republic of China
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Huang Chi-Yen
Graduate Institute of Photonics, National Changhua University of Education, Changhua, Taiwan, 500, Republic of China
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Huang Chi-Yen
Graduate Institute of Opto-electronic Engineering, National Chang Hua University of Education, Changhua, Taiwan 500, ROC
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