骆强辉, 江五贵. 预应变外管对双壁碳纳米管振荡器性能的影响[J]. 南昌航空大学学报(自然科学版), 2016, 30(3): 31-35. DOI: 10.3969/j.issn.1001-4926.2016.03.006
引用本文: 骆强辉, 江五贵. 预应变外管对双壁碳纳米管振荡器性能的影响[J]. 南昌航空大学学报(自然科学版), 2016, 30(3): 31-35. DOI: 10.3969/j.issn.1001-4926.2016.03.006
LUO Qiang-Hui, JIANG Wu-Gui. Effects of Mechanical Strain Applied on an Outer Tube on Oscillatory Behavior of Oscillators Built from Double-walled Carbon Nanotubes[J]. Journal of nanchang hangkong university(Natural science edition), 2016, 30(3): 31-35. DOI: 10.3969/j.issn.1001-4926.2016.03.006
Citation: LUO Qiang-Hui, JIANG Wu-Gui. Effects of Mechanical Strain Applied on an Outer Tube on Oscillatory Behavior of Oscillators Built from Double-walled Carbon Nanotubes[J]. Journal of nanchang hangkong university(Natural science edition), 2016, 30(3): 31-35. DOI: 10.3969/j.issn.1001-4926.2016.03.006

预应变外管对双壁碳纳米管振荡器性能的影响

Effects of Mechanical Strain Applied on an Outer Tube on Oscillatory Behavior of Oscillators Built from Double-walled Carbon Nanotubes

  • 摘要: 使用分子动力学模拟方法,分别对双壁碳纳米管的外管施加拉伸和压缩预应变,研究双壁碳纳米管振荡器的内管振荡情况。研究结果表明,预应变会影响碳纳米管振荡器的振荡性能,无论双壁碳纳米管振荡器的外管受到拉伸预应变还是压缩预应变,随着应变量幅度的增加,振荡器的能量耗散增加,导致振幅衰减加快。同时模拟结果也表明,当双壁碳纳米管振荡器的外管受到预应变时,拉伸预应变和压缩预应变都会使内管的振荡频率升高。

     

    Abstract: The oscillatory behavior of oscillators built from double-walled carbon nanotubes (DWCNTs) containing an outer tube subject to tensile pre-strain or compressive pre-strain is investigated using the classical molecular dynamics (MD) simulation method. The MD results show that the oscillatory behavior of the DWCNT-based oscillators is closely related to the pre-strain. Whatever the outer tube is subject to tensile pre-strain or compressive pre-strain, with the increase in the pre-strain, the energy dissipation of the oscillators is significantly accelerated, leading to faster amplitude attenuation. It is also found that the pre-strain applied on the outer tube will increase the oscillation frequency of the inner tube.

     

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