Wei Yang, Liu Liang, Liu Peng, Xiao Lin, Jiang Kaili, Fan Shoushan
Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, People's Republic of China.
Nanotechnology. 2008 Nov 26;19(47):475707. doi: 10.1088/0957-4484/19/47/475707. Epub 2008 Oct 30.
Joule-heating-induced electrical breakdown was applied to break suspended carbon nanotube (CNT) micro-yarns. The yarn ends at the breaking points were well-shaped sharp tips and mostly terminated by a single nanotube. The uppermost CNT was approximately 5 nm in diameter and was firmly compacted with the CNTs below it, yielding better mechanical, electrical and thermal contacts. An individual end could provide an emission current of approximately 25 µA, with potential application as a point electron source. In addition, we developed a pixel structure for a field emission display using oppositely aligned ends as the cathode and gate, respectively.
焦耳热诱导的电击穿被用于破坏悬浮的碳纳米管（CNT）微纱线。断裂点处的纱线末端呈形状良好的尖锐尖端，并且大多由单个纳米管终止。最上面的碳纳米管直径约为5纳米，与下面的碳纳米管紧密压实，产生了更好的机械、电气和热接触。单个末端可提供约25微安的发射电流，具有作为点电子源的潜在应用。此外，我们开发了一种场发射显示器的像素结构，分别使用反向对齐的末端作为阴极和栅极。
