【摘要】 在双阳极电弧放电的阴极沉积物中已发现扁平碳纳米壳、碳纳米棒和棒管相连的碳纳米结构．高分辨率透射电子显微镜（ Ｈ Ｒ Ｔ Ｅ Ｍ） 确认了碳纳米管直接生长在纳米棒之上，因而碳纳米管生长开端的来龙去脉清晰可见．另外， Ｈ Ｒ Ｔ Ｅ Ｍ 图像显示，多壳层碳纳米棒有一条中心线．有可能这是一种基于单键和三重键交替“ｓｐ”杂化的炔链碳同素异形体．更多还原

【Abstract】 Flattened carbon nanoshells,carbon nanorods, and nanostructures of rod\|tube have been observed in the cathodic doposits produced by a double\|anode arc\|discharge. As confirmed by high resolution transmission electron microscope (HRTEM), the growth of a carbon nanotube was directly linked to the nanorod, so the origin and development of nanotube seed is clearly discernible. In addition, the multishelled carbon nanorods HRTEM images revealed an isolated center line. We consider that such a line is probably a linear acetylenic carbon allotrope based on “sp” hybridization containing triple and single bonds. PACC: 6146; 6116D更多还原