Discovery of Carbon Nanowires Formed on a Carbon-Doped Ni(111) Substrate by a Bulk-to-Surface Precipitation Process
Discovery of Carbon Nanowires Formed on a Carbon-Doped Ni(111) Substrate by a Bulk-to-Surface Precipitation Process
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通过体表面沉淀过程在碳掺杂 Ni(111) 基底上形成碳纳米线的发现
DOI：
10.1143/jjap.42.1391
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发表时间：
2003
影响因子：
1.5
通讯作者：
M. Harada
中科院分区：
文献类型：
--
作者：
D. Fujita;T. Ohgi;K. Onishi;T. Kumakura;M. Harada
我们发现了一种在掺杂碳的Ni（111）衬底上的扁平单晶石墨（0001）表面上仅使用超高真空热处理的碳纳米线合成方法。值得注意的是，这种新的碳纳米线合成方法不需要外部含碳源。生长机制利用预先掺杂在纯Ni（111）衬底中的内部碳原子的体到表面沉淀过程。利用低能电子衍射结合俄歇能谱（LEED/AES）、扫描隧道显微镜（STM）和场发射扫描俄歇显微成像（FE-SAM）等技术对碳纳米线的纳米级形貌和化学性质进行了研究。
We have discovered a synthesis method for carbon nanowires on a flat single-crystal graphite (0001) surface on a carbon-doped Ni(111) substrate using only heat treatment in ultrahigh vacuum. It should be noted that this new carbon nanowire synthesis method requires no external carbon-containing source. The growth mechanism utilizes a bulk-to-surface precipitation process of internal carbon atoms that were doped in a pure Ni(111) substrate in advance. Nanometer-scale morphology and chemistry of the carbon nanowires have been clarified by low-energy electron diffraction combined with Auger electron spectroscopy (LEED/AES), scanning tunneling microscopy (STM) and field-emission scanning Auger microcopy (FE-SAM).