Adhesion between two radially collapsed single-walled carbon nanotubes
Adhesion between two radially collapsed single-walled carbon nanotubes
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DOI：
10.1007/s00707-013-0894-2
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发表时间：
2013-05
期刊：
影响因子：
2.7
通讯作者：
Cun Zhang;Lei Chen;Shaohua Chen
中科院分区：
文献类型：
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作者：
Cun Zhang;Lei Chen;Shaohua Chen
通过连续介质力学分析和分子力学模拟研究了两个完全相同的、径向塌陷的单壁碳纳米管之间的粘附。不仅考虑了纳米管之间的相互粘附能，而且考虑了纳米管内部的粘附能。一个封闭形式的解决方案的粘附配置实现，这是很好地符合我们的分子力学模拟。比较两个相同的单壁碳纳米管形成的粘附结构的势能，三种类型的配置，即，随着碳纳米管半径的增加，将形成圆形、变形和塌陷的形状，并被单壁碳纳米管的两个临界半径分开。此外，还发现塌陷的粘附结构具有最高的界面粘附能。结果表明，作为一个潜在的应用在碳纳米管增强复合材料，由塌陷的碳纳米管形成的阵列将是最佳的，由于强大的界面强度。
Continuum mechanics analysis and molecular mechanics simulations are performed to study adhesion between two identical, radially collapsed single-walled carbon nanotubes. Not only the inter-adhesion energy between nanotubes but also the inner adhesion energy in a nanotube is considered. A closed-form solution to the adhesion configuration is achieved, which is well consistent with our molecular mechanics simulation. Comparing the potential energy of the adhesion structures formed by two identical single-walled carbon nanotubes, three types of configurations, i.e., circular, deformed, and collapsed shape, will be formed with increasing carbon nanotubes radius and separated by two critical radii of the single-walled carbon nanotube. Furthermore, it is found that the collapsed adhesion structure possesses the highest interfacial adhesion energy. The results demonstrate that, as a potential application in carbon nanotube reinforced composites, arrays formed by collapsed carbon nanotubes will be optimal due to the strong interface strength.