Growth of Carbon Nanotubes and Its Applications in Quantum Transport Behavior and Hydrogen Storage
Carbon nanotubes (CNTs) were successfully grown on alloy substrates made of copper and iron groups by hot-filament chemical vapor deposition method with self-bias induced by a radio-frequency-field. Carbon nanotubes were also directly grown on the ends of micro-electrodes that were fabricated by photolithography. The sample with a single CNT across nickel electrodes was tediously selected by a scanning electron microscope (SEM) to measure the I-V characteristic by a closed cycle He refrigerator. A discontinuous quantum step of the I-V curve was observed at low temperatures as the current is above certain values. We also developed a one-dimensional transport theory for conductors that can qualitatively portray the quantum behavior of the I-V characteristic. The ability of hydrogen uptake of several carbonize material experiments have been carried out and compared. Purified Single-wall and Multi-wall carbon nanotubes (MWCNTs) produced by arc discharge and microwave (MW) CVD, Taiwan bamboo charcoal with MWCNTs on it are compared and discussed. Because of high hydrogen storage capacity, low production cost and high mass production speed, Taiwan bamboo charcoal shows excellent results irrespective of to be pretreated with or without alkali or acid solvent.
H.Y.Miao L.W.Chang J.T.Lue
Department of Electrical Engineering,Tunghai University,Taichung,Taiwan Department of Electrical Engineering,National Tsing Hua University,Hsin Chu,Taiwan Departments of Physics,National Tsing Hua University,Hsin Chu,Taiwan
国际会议
Progress in Electromagnetics Research Symposium 2008(2008年电磁学研究新进展学术研讨会)(PIERS 2008)
杭州
英文
1-3
2008-03-24（万方平台首次上网日期，不代表论文的发表时间）