Multistability of armchair single-walled carbon nanotubes: a molecular dynamics investigation

Multistability of armchair single-walled carbon nanotubes: a molecular dynamics investigation
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扶手椅单壁碳纳米管的多稳定性:分子动力学研究

DOI:
10.1088/2053-1591/ab2741
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发表时间:
2019-06
影响因子:
2.3
通讯作者:
Yang Qing-Sheng
Yang Qing-Sheng
中科院分区:
材料科学4区
文献类型:
--
作者:
Guo Shi-Jun;Yang Qing-Sheng

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我们通过分子动力学(MD)报道,扶手椅单壁碳纳米管(ACNTs)具有多重稳定性,而不是双稳定性,因为直径高于约3.5 nm的阈值。本研究表明,当直径大于阈值时,acnt具有四种稳定状态。新发现的稳定状态是由表面范德华力引起的。我们还发现不同稳定状态之间的转换可以通过外部载荷或温度来实现。这意味着acnt在未来的纳米级器件中具有巨大的应用潜力。
We report by molecular dynamics (MD) that the armchair single-walled carbon nanotubes (ACNTs) has a multistability rather than bistability as the diameters are above a threshold value of about 3.5 nm. The present work demonstrates that ACNTs have four stable states when the diameters are above the threshold value. The newly found stable states are caused by surface van der Waals forces. We also find the transformation between different stable states can be realized by external loading or temperature. These imply the ACNTs have a great potential application in the future nanoscale devices.
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