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Oscillation of gas molecules in carbon nanotubes

机译:碳纳米管中气体分子的振荡

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The dynamics of N-2 molecules blocked in open single-walled carbon nanotubes is investigated using molecular dynamics simulations. It is found that periodic axial and radial oscillations with extremely high frequency exist widely among these molecules. Between the two nanotube ends, N-2 molecules oscillate along or parallel to the nanotube axis, and their frequencies show an inverse length dependence in the range of 22 to 64 GHz. Accompanying the axial oscillation, the molecules oscillate radially with small amplitudes in the lateral potential well. The corresponding frequencies have a magnitude of several hundred gigahertz, and the maximum exceeds 1800 GHz. These periodic oscillations contribute to the molecular blockage in nanotubes.
机译:使用分子动力学模拟研究了在开放式单壁碳纳米管中封闭的N-2分子的动力学。发现在这些分子中广泛存在着频率极高的周期性轴向和径向振荡。在两个纳米管末端之间,N-2分子沿着或平行于纳米管轴振荡,并且它们的频率在22至64 GHz范围内显示出与长度成反比的关系。伴随着轴向振荡,分子在侧向势阱中以小幅度径向振荡。相应的频率幅度为几百兆赫兹,最大值超过1800 GHz。这些周期性振荡导致纳米管中的分子阻塞。

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