Coalescence of double-walled carbon nanotubes: Formation of novel carbon bicables
Coalescence of double-walled carbon nanotubes: Formation of novel carbon bicables
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DOI：
10.1021/nl0492483
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发表时间：
2004-08-01
期刊：
影响因子：
10.8
通讯作者：
Dresselhaus, MS
中科院分区：
文献类型：
--
作者：
Endo, M;Hayashi, T;Dresselhaus, MS
在这里，我们证明，通过聚结双壁碳纳米管（DWNTs），一种新的和稳定的结构，包括扁平的小管含有两个单壁管（SWNTs）的创建。该过程的发生是由于DWNT外壳的合并和重建，使内圆柱体几乎完好无损，后者被封装在大直径合并管（bicable）内。我们认为聚结过程是由于：（1）外壳的热活性，这是由表面能最小化过程驱动的，以及（2）拉链机制，随后是原子重构，其中两个外壳相互作用并退火。
Here, we demonstrate that by coalescing double-walled carbon nanotubes (DWNTs), a novel and stable structure consisting of flattened tubules containing two single-walled tubes (SWNTs) is created. The process occurs due to the coalescence and reconstruction of the outer shells of DWNTs, leaving the inner cylinders almost intact, the latter being encapsulated inside the large diameter coalesced tube (bicable). We propose that the coalescence process is due to: (1) the thermal activity of the outer shells, which is driven by a surface energy minimization process, and (2) a zipping mechanism followed by atom reconstruction, in which two outer shells interact and anneal.