Functional Nano and Soft Materials Laboratory (FUNSOM), Soochow University, Suzhou Industrial Park, Suzhou, Jiangsu, People's Republic of China.
Nanotechnology. 2010 Jan 29;21(4):045201. doi: 10.1088/0957-4484/21/4/045201. Epub 2009 Dec 10.
The growth behaviors and contact resistances of vertically aligned carbon nanotubes (CNTs) and carbon nanofibers (CNFs) grown on different underlayer metals are investigated. The average diameter, diameter distribution, density, growth rate and contact resistance exhibit strong correlation with the choice of catalyst/underlayer combination. These observations are analyzed in terms of interactions between the catalyst and the underlayer metal. The CNT via test structure has been designed and fabricated to make current-voltage measurements on single CNTs using a nanomanipulator under scanning electron microscopy (SEM) imaging. By analyzing the dependence of measured resistance on CNT diameter, the CNT-metal contact resistance can be extracted. The contact resistances between as-grown CNTs and different underlayer metals are determined. Relationships between contact resistances and various combinations of catalysts and underlayer metals are investigated.
研究了在不同底层金属上生长的垂直排列的碳纳米管（CNT）和碳纳米纤维（CNF）的生长行为和接触电阻。平均直径、直径分布、密度、生长速率和接触电阻与催化剂/底层金属组合的选择密切相关。这些观察结果可以根据催化剂和底层金属之间的相互作用来分析。已经设计并制造了 CNT 通过测试结构，以便在扫描电子显微镜（SEM）成像下使用纳米操纵器对单个 CNT 进行电流-电压测量。通过分析测量电阻对 CNT 直径的依赖性，可以提取 CNT-金属接触电阻。确定了生长的 CNT 与不同底层金属之间的接触电阻。研究了接触电阻与催化剂和底层金属的各种组合之间的关系。
