| 六角排列碳纳米管阵列的场增强因子的计算 |
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| 引用本文： | 戴剑锋,姚东,王青,李维学,乔宪武. 六角排列碳纳米管阵列的场增强因子的计算[J]. 兰州理工大学学报, 2008, 34(5) |
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| 作者姓名： | 戴剑锋 姚东 王青 李维学 乔宪武 |
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| 作者单位： | 兰州理工大学,理学院,甘肃,兰州,730050;兰州理工大学,甘肃省有色金属新材料重点实验室,甘肃,兰州,730050;兰州理工大学,理学院,甘肃,兰州,730050 |
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| 摘 要： | 通过求解Laplace方程得到六角排列的碳纳米管(CNTs)阵列的管尖端电场强度和场增强因子,具体研究CNTs的自身线度、阵列密度及阵列形状对CNTs的场增强因子的影响.研究结果表明,场增强因子随CNTs长径比的增加而增加,对于长径比一定的CNTs阵列,对应着一个最佳阵列密度,如管长为 6 μm、管径分别为5 nm、13 nm、20 nm的CNTs阵列对应的最佳阵列密度为3.05×1011 cm-2、4.83×1010 cm-2、2.12×1010 cm-2.在相同的阵列密度下,六角排列CNTs阵列的场发射性能要优于四方排列的CNTs阵列.计算得到六角排列CNTs阵列上端面的电势分布曲线.
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| 关 键 词： | 碳纳米管阵列 场发射 场增强因子 六角排列 |
Calculation of field enhancement factor of hexagonal array of carbon nanotubes |
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| DAI Jian-feng,YAO Dong,WANG Qing,LI Wei-xue,QIAO Xian-wu. Calculation of field enhancement factor of hexagonal array of carbon nanotubes[J]. Journal of Lanzhou University of Technology, 2008, 34(5) |
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| Authors: | DAI Jian-feng YAO Dong WANG Qing LI Wei-xue QIAO Xian-wu |
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| Affiliation: | DAI Jian-feng1,2,YAO Dong1,WANG Qing1,LI Wei-xue1,QIAO Xian-wu1(1.School of Science,Lanzhou Univ.of Tech.,Lanzhou 730050,China,2.State Key Lab.of Gansu Advanced Non-ferrous Metal Materials,China) |
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| Abstract: | The tip electric field intensity and field enhancement factor of the hexagonal carbon nanotubes(CNTs) array were calculated by solving the Laplace equation.The influences of the nanotube's linearity proper,and array's shape as well as the density of the array on the enhancement factor was studied in the concrete.The result of investigation indicated that the field enhancement factor would increase with the aspect ratio of the carbon nanotube.For a carbon nanotube array with definite aspect ratio,there would... |
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| Keywords: | carbon nanotube arrays field emission field enhancement factor hexagonal array |
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