Electrical properties of single wall carbon nanotube reinforced polyimide composites
Electrical properties of single wall carbon nanotube reinforced polyimide composites
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DOI：
10.1016/s0266-3538(03)00067-8
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发表时间：
2003-08-01
影响因子：
9.1
通讯作者：
Harrison, JS
中科院分区：
文献类型：
--
作者：
Ounaies, Z;Park, C;Harrison, JS
研究了单壁碳纳米管（SWNT）增强聚酰亚胺复合材料的电学性能与SWNT浓度的关系。交流和直流电导率进行了测量，和特定的导纳的频率行为进行了研究。实验电导率被发现服从一个相对较低的渗流阈值的类似双折射的幂律。电流-电压测量结果显示出非欧姆行为，表明量子隧穿导电机制。分析建模和数值模拟使用高纵横比，刚性，spherecylinders作为模型的单壁碳纳米管进行了帮助理解这些结果。预测结果与实验结果吻合较好。爱思唯尔有限公司出版
Electrical properties of single wall carbon nanotube (SWNT) reinforced polyimide composites were investigated as a function of SWNT concentration. AC and DC conductivities were measured, and the frequency behavior of the specific admittance was investigated. The experimental conductivity was found to obey a percolation-like power law with a relatively low percolation threshold. The current-voltage measurement results exhibited a non-ohmic behavior, indicating a quantum tunneling conduction mechanism. Analytical modeling and numerical simulation using high aspect ratio, rigid, spherocylinders as models for the SWNT were carried out to aid in understanding these results. The predictions were in good agreement with the experimental results. Published by Elsevier Ltd.