采用一种改进的化学气相沉积方法,成功地在石墨基底上自组装生长出以碳锥为支撑的、碳纳米管为芯的新型功能材料.该结构的材料可以用作扫描电子显微镜探针和场发射电子显微镜的针尖.利用电子显微镜研究了不同合成条件对该碳纳米管与碳锥结构生长的影响,给出了最优生长条件,并讨论了生长机制. A new type of functional material with carbon nanotubes as core supported by carbon cones is successfully assembled and self-assembled on a graphite substrate by an improved chemical vapor deposition method.The material of the structure can be used as a scanning electron microscope probe and Field emission electron microscope tip.The effect of different synthesis conditions on the growth of the carbon nanotubes and the carbon cone structure was studied by using electron microscope, the optimal growth conditions were given, and the growth mechanism was discussed.