CORE-TUBE MORPHOLOGY OF MULTIWALL CARBON NANOTUBES
CORE-TUBE MORPHOLOGY OF MULTIWALL CARBON NANOTUBES
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DOI：
10.1142/s0217979210064228
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发表时间：
2009-07
影响因子：
1.7
通讯作者：
Motohiro Sato;H. Shima;Kohtaroh Iiboshi
中科院分区：
文献类型：
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作者：
Motohiro Sato;H. Shima;Kohtaroh Iiboshi
本文研究了多壁碳纳米管（MWNTs）的横截面形貌约束的径向和周向的无限周围的弹性介质，受到均匀的外部静水压力。在这项研究中，一个二维平面应变模型，假设没有变化的负载和变形沿着管轴。从弹性屈曲分析中，我们发现了一些特征性的横截面形状。通过与无弹性介质情况下的截面形状进行比较，着重讨论了周围弹性介质对压力屈曲截面形状的影响。结果表明，在无弹性介质嵌入的情况下，内管的截面形状保持圆形或椭圆形;而弹性介质嵌入的情况下，内管可能会出现弯曲模态，尤其是当壳层数量较少时.
The present paper investigates the cross-sectional morphology of Multiwalled Carbon Nanotubes (MWNTs) restrained radially and circumferentially by an infinite surrounding elastic medium, subjected to uniform external hydrostatic pressure. In this study, a two-dimensional plane strain model is developed, assuming no variation of load and deformation along the tube axis. We find some characteristic cross-sectional shapes from the elastic buckling analysis. The effect of the surrounded elastic medium on the cross-sectional shape which occurs due to pressure buckling is focused on by the comparison with the shape for no elastic medium case in our discussion. It is suggested that in no embedded elastic medium cases, the cross-sectional shapes of inner tubes maintain circle or oval; on the other hand, an embedded medium may cause inner tube corrugation modes especially when the number of shells for MWNTs is small.