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arXiv 1409.5342cond-mat.mtrl-sci
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单壁碳纳米管热整流的分子动力学研究

Thermal rectification of a single-wall carbon nanotube: a molecular dynamics study

M. Ebrahim Foulaadvand, Azadeh Saeedi, Farrokh Yousefi, Saeed Khadesadr

摘要:

利用分子动力学模拟研究了单壁质量梯度碳纳米管中的热整流现象。第二代Brenner势被用来模拟碳原子间的相互作用。考虑了固定边界条件。我们将我们的研究结果与Alaghemandi等人以前的研究进行了比较,该研究采用了不同的势和边界条件。得到了整流因子$R$与温度、纳米管直径、长度以及质量梯度的关系。结果表明,随着温度的升高,精馏降低,而通过增加其他参数,即质量梯度,直径和管长,它增加。

英文摘要:

We have investigated the thermal rectification phenomenon in a single-wall mass graded carbon nanotube by molecular dynamics simulation. Second generation Brenner potential has been used to model the inter atomic carbon interaction. Fixed boundary condition has been taken into account. We compare our findings to a previous study by Alaghemandi et al which has been done with a different potential and boundary condition. The dependence of the rectification factor $R$ on temperature, nanotube diameter and length as well as mass gradient are obtained. It is shown that by increasing the temperature, the rectification decreases whereas by increasing the other parameters namely the mass gradient, diameter and the tube length it increases.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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