Development of Ultra-High Speed Switching Devices by Use of Carbon Nanotubes

用分子动力学的方法研制了一种超高速开关器件，研究了位于多壁碳纳米管顶端的单个五边形的场电子发射的基本性质。用场发射显微镜测量了表面清洁或吸附了氢分子的五边形的伏安特性。在氢分子的吸附和脱附的发射电流中观察到具有重复性的开关作用。用波长为532 nm的脉冲激光照射，在不破坏衬底五角形的情况下，使人工解吸氢分子成为可能。

To develop an ultra-high speed switching device by means of molecular dynamics, fundamental properties of field electron emission from a single pentagon located at a tip end of multi-wall carbon nanotube. Current-voltage (I-V) characteristics of the pentagon with clean surface or adsorbed hydrogen molecule were measured by field emission microscopy. Switching actions with reproducibility were observed in the emission current for adsorption and desorption of a hydrogen molecule. Pulse irradiation of Nd;YAG laser with the wavelength on 532nm made possible to desorb a hydrogen molecule artificially without any damage of substrate pentagon.